I've got a 4 year old and a 6 year old. All valid things you raise here, and they certainly still apply with mine at their current age.
A positive though, that may not apply to everyone, but certainly applied to me: They make you grow up
Suddenly there are other people that really depend upon you. Whilst finding the time to get a startup running is harder, I think the motivation to succeed is stronger than it was when it was just me with few cares in the world.
My kids are the same age and I agree completely. At some point after my kids were born I found that the change in responsibility made many other areas of my life simpler.
Once I began to understand how I could fully commit myself to my children and what it means to have kids that fully depend on you, many other things became easier to prioritize and commit to, or reject. It was easier for me to focus at work and realize that I need to make that time valuable, it was easier to exercise and eat right, it was easier to say to no to people and drop activities that were not core to what I was doing. Maybe clarity around priorities is what changed the most for me.
A positive though, that may not apply to everyone, but certainly applied to me: They make you grow up
Suddenly there are other people that really depend upon you. Whilst finding the time to get a startup running is harder, I think the motivation to succeed is stronger than it was when it was just me with few cares in the world.