It's quite odd reading your last post, Lou, as your feelings about being pregnant are almost the opposite to mine under comparable circumstances. I'd had many early miscarriages beforehand and felt that, if this was a "sticker", I'd throw myself into making it work as a family of two. I was 34. My family and friends were dead against it, pointing out all the drawbacks you've just highlighted! In the end, I decided to do nothing. I was far too stressed to take care of my health as one should at such times, devoted myself to my high-pressure job, and miscarried late.
I'm not sure why I'm telling you this except as yet another "I get it, it happened to me too" story. The drawbacks you've mentioned are real, though not insurmountable, and there is in fact life for women without children: I've certainly done a lot of amazing things instead of having DC. Like you, I love children and expected to have them, but never did feel the craving I know some women do. Hoping to reassure you the options are wide and various - none of them 'wrong'!
I do think he manipulated you into a position of financial dependence, which is biting you now. I agree it would be good to keep the house as you love it and have fab neighbours - what will it take to do that? If you went full-time, got a lodger and changed to a mortgage with lower repayments, could you do it?
If the answers to that paint a grim picture, it could be worth taking a long look at what smaller properties are available in the same area - to rent or to buy - and doing the sums again. One of the many things I've learned (due to being shafted by TWO twunts - I'm a slow learner) is that my talents made those homes wonderful to live in. Not the actual buildings, or the quality of the fittings (though I miss that), but the way I pull the bits together and make a home.
It's very much like my earlier rambling post about the marriage having been made of your love, regardless of the other person. You will find, I think, that your home is made of your style and your personality. All your good qualities go with you, wherever you are and whomever you're with. You just learn to deploy them judiciously in future 
Apologies for yet another long ramble, which probably hasn't been much help ... Don't worry about being narky with your parents, they can stand it. It's great that your friends are doing normal stuff with you and that you ate! Yay, well done!! Do keep on taking care of you. x