I will reply as I do think this is how my husband sees the situation.
To clarify: he earns almost double what I earn although he does have high outgoings (child maintenance, higher tax, liability insurance etc.) so probably not very much more as net income.
The house is modest. Although he is a solicitor, he is a sole practitioner with generally low-value cases. The mortgage is tiny. It costs less per month than the amount I contribute to food and 50% of bills. IF I were to be put on the deeds and start paying half the mortgage, I would not expect to receive half on separation, just the amount I contributed plus half of any increase in value since I started contributing. I have made this absolutely clear. I just want the security and sense of being part of a team, whilst also wanting to feel more at home and so that I can feel more assertive in asking to make changes/improvements to the property. I do make suggestions but they are quickly discounted as extravagant or unnecessary (like getting the SH dishwasher I bought plumbed in, or damp-proofing a dodgy patch of wall).
I earn enough to be entirely self-sufficient and to pay off any debts each time I get paid although not enough to save. If I were to pay towards the mortgage, I would make easy sacrifices and be happy to. I am not 'subsidised' except that I have a roof over my head. I don't live in London so local rental rates would take up about 25% of my post-tax income (nowhere near 75%). Contributing to the mortgage would set me back less than 15%, unless (as I think we should), we either paid off the mortgage early, together and then bought somewhere needing fewer repairs (and with an additional bedroom to accommodate the newborn when it's ready for a room instead of splitting ours). That way we would feel on a more equal footing and my husband would be free to 'ringfence' an amount for his first children, to make sure they are not disadvantaged by my involvement.
I think all my requests are fair but they are baulked at by DH. It is a trust issue. I am patient and trying not to panic because I hope that with time he will realise I am not out to fleece him.
As for first partner (they didn't marry), she certainly didn't fleece him. His trust us around being left and having the children taken from him. From what I understand, she was on maternity leave (paid by employer and then became sahm supported by him) until she left, with children aged 2 and 4. He paid her rent when she first left until she married someone new.
What hurts is how generous and supportive he was with her yet how reluctant he seems to be to offer me the same opportunity to bond, recover, be a mother as he afforded her. I think I have always seemed very independent and he liked that. I now need to be able to depend or at least be supported through loss of income while I bring our child into the world and he is struggling to accept this.
Perhaps he feels his income is not reliable. This is possible. But he frequently has these fears and yet his business is growing year on year. I think he fears I will lose my main client, but I think that is only a real danger if I give them unrealistic expectations as to my return date and don't find and pay for temporary support to ensure the services they receive are almost uninterrupted. He is not happy for me to take on the expense of paying for outside help. He would prefer me to try and at do the minimum, hope that they won't notice and then return fully asap. I find that whole situation deceptive and stressful so have refused. He thinks this is evidence of my lack of money-savvy.
I have suggested we open a joint account which we contribute to equally (I from savings, he from income) to provide for the baby. He doesn't think this is necessary and would prefer to just get things as and when. As the main food shopper and the one expected to buy the big hits (pram etc), I am bound to pay for the vast majority of baby's upkeep.
Childcare shouldn't be an issue as I work from home and he is often able to work from home, so I don't see why he thinks he should cut his hours unless for an ulterior motive - especially given how precarious he has otherwise stated he feels his income to be.