I am 37, and my wife and I have an awesome little 2.5 year old boy named Calico Jack.
Do I regret having him?
Not for a second, having a kid is like seeing the world through new lenses and just so rewarding. But that doesn't mean it doesn't have some costs that even with a lot of forethought that I didn't quite anticipate. No regrets, but def some costs in terms of impact on our marriage and on my wife that I didn't anticipate. We've overcome a lot of them in the last few years, but it was hard and took some time. And, it still takes a lot of time to make sure we are connected. Money helps too so you can get a babysitter for a date once a week, or to pay for the insane cost of pre-school. We are thinking about a second but nervous about the further impact on things.
I started a few companies when I was younger and I've had a few good exits, so I came into the marriage a pretty seasoned entrepreneur. Starting a business while married and with a kid is TOTALLY DIFFERENT than being in your 20s/30s and single (or in a relationship). It can def be done, but I've had to get a lot better on time management and have some honest conversations with myself about what I have to stop doing in my life. I think in some ways it gives you some hard boxes around decisions which make decisions easier too...
I do think you can still pursue entrepreneurship, but it has to be a team decision and it can't sprawl around like it might be able too in your 20s. It will def cause relationship stress as finances always do that. My wife and I run a Facebook support group for spouses of entrepreneurs on the subject (https://marriedtoanentrepreneur.org/).
Hopefully, you can rekindle intimacy in your relationship as that doesn't sound like a good place to be :(. One of the big joys of being married for me is traveling or hanging out with my wife, and making time for that really helps to reset me and remember that we have strong connections. If that was lost it would be more like having a roommate who gets on my nerves sometimes :)
Hope that helps!