Xenia - I have to be honest and say from everything I've read about your situation that I recognise you from another board (there are too many distinct co-incidences).
I agree totally that fathers (or mothers) who choose to stay out of their children's lives are utterly and totally irresponsible, and, dare I say it, guilty of child abuse of sorts, by denying the child(ren) contact and, hopefully, a loving, worthwhile, bond. Let alone the trauma those children might possibly suffer, with feelings of abandonment and/or (quite possibly) guilt that they drove daddy away, and/or feelings of low self esteem because they rationalise being all but abandonned by imagining themselves "not good enough" or "lovable enough".
Irrespective of circumstances, I also agree totally that when 2 supposed adults make babies, those babies should, in theory, become a joint responsibility until they are old enough to make their own way in the world. And yes, for the parent left behind, it's extremely wearing to have to be 100% responsible for everything, from the sublime to the ridiculous .... although, some parents do find, in spite of the hard work, some relief from actually being able to manage things themselves, in a way they are happy with, without interference from an ex with opposing views.
I have nothing but contempt for your ex who has waived his responsibilities practically 100%. He certainly doesn't sound like a "man".
No - it's NOT fair.
However ...... (deep breath) ..... if you are who I think you are, you are also in a far better position than most single mothers to effectively manage the situation you find yourself in. Let me stress I do not agree with that (the situation) but you have various options open to you which most single mums would die for. I know you are a hardworking, successful and respected professional woman (maybe the victim of your own success so far as free time is concerned ?), who could - in theory ? - cut back on the amount of work you accept (??) in order to free up time. I believe you have a nanny - nothing wrong with that I hasten to add, but that means your working time is enabled ..... an option which is impossible for many lower paid single mums (some of whom would not be able to afford childminder rates). I suspect from what I know of you and your work that you would also be able to employ other sorts of help (gardener, window cleaner, cleaner etc) which again, places you in an enviable position.
I must sound like a right cow, and I don't want to have a go at you because, I agree your ex-H sounds an utter sh*t, to be frank.
But, you are in a similar position to many single mums in having to do it all ..... yet a world away when it comes to actually being able to get on with your life, not least because it seems, from what you've written elsewhere, that you at least can make (very comfortable and desirable) choices about your work, time, home, children's education, etc.
The issue of free time is something you can do something about. Forgive me if I am wrong but you've described, quite explicitly, the value of the home (or at least its mortgage) several times. You could downsize, you could consider moving to a less expensive area, even taking into account business requirements .... depending on where you moved I should think you'd be capable of knocking 100s of 1000s off your mortgage, which, in turn, would mean perhaps you didn't have to accept quite so much work as your repayments would have reduced considerably ? Bingo - free time !
And I can't believe you wouldn't be able to afford a babysitter !
At this point, if I have mistakenly confused you with someone else, please accept my heartfelt apologies - I suspect anyone else reading this may well be very baffled.
Your husband's irresponsibilty is one issue, and your lack of free time is another. I can see 100% why you feel resentful of his effective abandonment but you are in a position to make free time for yourself. Okay - you wouldn't have to if he wasn't such a tosser, but you can and that's the important thing.
Otherwise, what's going to happen ? Will you complain about his lack of responsibility for the next 11 or so years until all your children are adults, whilst doing nothing to maximise opportunities for a social life ? You have every reason to be angry with him but it certainly seems that all complaints/pleadings/appealing to his better nature and so on are falling on deaf and/or ignorant ears. So you really do have to accept that he is NOT going to do what he should and you need to get on with your life without expecting any help from him.
You, Xenia, can make your life work for you. Your success should be manipulated to make you happy, you shouldn't be a hostage to it.
And really, can you imagine how "average" women, capable only of earning minimum wage who have been similarly abandonned, would ever even be able to afford to get out - to pay for a drink, or a babysitter, or a gym session ? I just cannot believe, whilst appreciating you have a large family (though 3 of the 5 are young adults are they not?), that you are incapable of getting yourself some "me" time - and in that, you are very fortunate, because not many single mums can.
You either want free time or you don't. If you do, get out there and get on with it by making the necessary tweaks. You shouldn't have to (in an ideal world) make compromises because your ex is a tw*t but failing to do this for yourself can't be blamed entirely on him.