Having met many religious people and spoke to many, they are all near impossible to actually physically leave... Most druft away but remain a member (catholics etc), but by far the worst and most life dominating has to be Islam.
I have a friend who would lose his friends, his family (same as jw) but then also his identity, his culture, his place in his society, his traditions, his way of life.... Everything tht makes him him. Very sad. It is punishable by death too.