i don't know. i just think that the "i don't give a fuck mentallity" is a myth. and everyone who claims to have it is a fucking liar that blows up sooner or later. or takes all his frustrations out on somewhere else or just bitches about everything and everyone behind closed doors.
at least i know a shitload of people that say "idgaf is sooooo me" but the next thing i know is they whine about every bullshit to me when they are drunk or whatever.
so it's better to try to cope with stuff and care about whatever troubles you then trying to not give a fuck.
this is just my way of thinking tho.