"Having kids has no impact on having your own business"
You're saying that raising children has no impact on your available time and money? That seems a bit far fetched. I'd agree that it's totally possible to have kids and do a startup, but frankly you'll be working with a bit less money and less time (and for a while way less sleep).
Of course raising children requires time and money, just like any other activity.
I have a friend who competes in Iron Man. It takes a huge commitment of time and energy, and every time I talk to him he has just spent $1000 for some new attachment to his super-bike. Iron Man negatively impacts his "available time and money". Oh, and he has a startup. And it's very successful.
I suspect that most of you have hobbies that consume 3-4 hours of your weekday and several hundred dollars of your monthly budget.
Now, in my case, my family is my hobby. Spending time with my kids is how I relax and unwind. I don't go out, or watch TV, or play a musical instrument, or compete in Iron Man, or participate in Renaissance Festivals. My life might seem empty and boring to you, if your idea of relaxing and unwinding is different than mine.
Having a family is one choice -- amongst many -- for how to spend your free time and disposable income. I'm not claiming that you can have it all -- for example, I don't think anyone could do startup + family + Iron Man -- but I do think that startup + family is eminently doable.
It very much depends on how you and the mother decided to split up the work load. If she is happy taking close to 100% of the work load and letting you do your thing then it shouldn't be impossible to have basically the same amount of time.
I'd argue that if you're spending ~0% of your time with you kids then you're doing it wrong. Something has to come first, and imho if you have kids then the kids need to come first. That means spending as much time as you can with them, both to help raise them, teach them, and also to experience parenthood.
Having a kid myself, and having turned down an awesome job opportunity since it would have kept away from my daughter for too long periods at a time, I totally agree with you. That being said, I know people who have made the opposite choice, and while I don't agree with it, their kids seem to be turning out OK.
You're saying that raising children has no impact on your available time and money? That seems a bit far fetched. I'd agree that it's totally possible to have kids and do a startup, but frankly you'll be working with a bit less money and less time (and for a while way less sleep).