Minervaitalica, great post.
May I also add that, with benefit of hindsight, really it is not very important for your children's long term happiness and well being how many hours they were left at nursery/with grandma etc when they were little.
I've done all combinations with my own children and they are all adjusted individuals so far, as they are well cared for, loved etc...
I really think we get so hung up on these things when they are little and then looking back we realise that it wasn't worth all that heartache, honestly.
The problem with being a mother is that you get criticised for whatever choice you make, so no point in worrying about that. Just do what you want to do.
I remember the barrage of sneidy and sometimes downright rude comments I received the first time I sent my two young children to spend 3 weeks abroad with my parents. There was the "oh my god are you sure" "I would never to that" and many "I love my children too much to do that" - as it turns out they do it every year and all look forward to it now as the highlight of their summer holidays. But to listen to other people I was the cruel mother from hell.
I personally don't like the phrase "copping out"in this context, it's not like you are abandoning your children into the care system - it's not about cop outs, it's about choices.