Many of us played video games because we lacked any social structure in our lives. TV and video games make people feel like they aren't alone, even when they are.
Its just my opinion but I think you can remedy that by creating a supporting social environment for the whole family to be part of, regardless of what hobbies someone's into.
Edit to add: I didnt mean to imply you should go do this, its just what I think helps prevent the issue.
Pretty rough to be dumped into adult life dealing with all that, hope things are going better! Always helps me to remember that even the best of us make tons of mistakes every day. Not sure why little phrases can have so much power though.