Just can't stop thinking I am the problem...

So from my previous post, my wife (33F) and I (32M) had a good long chat about the issue that caused me to do what I did. I fully owned it and she has forgiven me, she even said "I can't feel angry because I can't help but think I pushed you to it". Fast forward a few weeks of building back trust etc and we go on holiday. We were away for 4 nights and only had sex once, but that was practically because I begged her too. I actually felt terrible afterwards for having been so persistent but she fully enjoyed it.

3 weeks we've been back and home and nothing... absolutely nothing. What startled me yesterday was on a walk with our dog we were talking about holidays and I said perhaps we could save money for another one to which she cut accross and said "or a baby, you know they are expensive like nappies etc"- I just cannot fathom in her head, no matter how many times I have said, I am NEVER bringing a child into a dead bedroom- I know exactly the type of person she is and she'll never find herself attractive again or feel sex despite what I do and say to her and I'll be doomed to a sexless marriage.

My question is, how the hell can I make it clearer than I already have?? We don't share hobbies or passions, so take that out, the sex (which doesn't exist) and the huge disparity in income which relies on me to fund our life, what the fuck is in this marriage for me by bringing a child into it??

Maybe I'm the asshole I don't know. I feel like I am on the merry go round and neither the music is slowing or the ride stopping... help