Am I at fault or responsible if I have this life?

Well you're alive

look up non-zero days

You should become a pilot

If you're content with it and it's actually sustainable, you're doing alright.

No your parents fault it is always the fault of the parents.

if you're old enough to ponder this you're old enough to fix it

go out tonight for 3 hours minimum, even if it's just sitting in a car somewhere else

you will hate yourself if you hit 30 and you're still doing this