In spite of what it seems like, not everyone has had a sucky or tragic childhood.
Not everyone has had a harrowing young adulthood.
If you've had a nice life, don't apologize for it. Just be grateful.
Don't go looking for trouble just because you've had none. There are plenty of honest mistakes or blunders people simply make on their own, when they're not looking for trouble.
Don't apologize for having a nice life. It's reassuring to know someone has.