I've lost many friendships because I grew out of things. My friends were a bad crowd involved in street racing and just being a nuisance. No real direction and involvement from parents. I was that too.

At some point I realized I need to improve my life and went back to school for CS. Got a good job and got my life together. My "friends" are still doing the same things, they just got older. If we met today, I would never befriend them.

I did however meet new friends, but they are not as close to me. I like keeping distance. I'm mostly focused on spending time with my child and just teaching him things. I also try to learn about sports and things he is interested in. Therefore, time for friends is limited.

Having a family also reduces the driver to connect with random people.