the problem with narcissists is what happens to them when nobody is around to pay them the attention that they become addicted to. thats when they start falling apart and doing destructive things like sabotaging their own childrens lives etc. a lot of them will fall into deep depressions, start self medicating it with substance abuse and things like that
one of the most difficult things you can ever be is a narcissist it seems like they have great lives but its like being hungry always and no amount of food will ever make you full if you can imagine what that feels like.