Told wife I can't try for a second child anymore

Give some background first, I'm 45 only child, shes 42, has a brother. Both work full time, she has weekends off, I have tues wed off. have an almost 2 yr old. Wife is overweight, approx 240ish, she never has told me but saw doctor papers before. Since last July weve tried twice with miscarriages, and I was really on the fence to begin with. I really dont want to go through the sleep deprivation anymore. Money is tight with a new expensive house. I dont want to be in my 60s with 2 teenagers. We Both struggle to have time for anything right now with both of us working. Also dont have much family for watching kids. My gut is saying no, alomg with my judgement of our situation. I totally understand the want for having two kids, my wife says I dont really understand. I've tried the last 2 times and just cant do it. Both miscarriages happend bewtween 8 and 10 weeks and there was no specific reason the dr gave us other than it just didnt take. She basically said she doesnt know if she can get over this.Guess I'm just wanting to hearsome unbiased opinions. Thanks via /r/Parenting https://ift.tt/3cmtToy