INTJ parents, how did you handle the loss of personal space?

I've been considering what it would be like to have kids. I'm mortified that I would never get any time for myself.

I had a recent run in with some time consuming responsibility that impeded my alone time and it's got me thinking hard about this stuff.

So how do you emotionally handle it? Where is your you time? If you don't have any, how do you cope?