Families
I knew plenty of guys when I was in flight school who have children and wives. I am married myself and went to ATP's 90 day program and was away from my wife for that period of time. It is hard, but it can be done. Plenty of people have. Don't let that keep you from what you want to do with the rest of your life. Some people do have a bad experience with aviation, that doesn't mean you will too. I changed carriers myself, and I should be at the airlines within the next 2-3 months.