Now that I'm thinking about it, did everyone that used brainwallet, eventually get compromised?
if you did it right you'd be fine. the problem is that very, very few people bothered to do it right.
diceware is the way to do it right but even then i'd always be wondering about it.
as for security myself i do hardware wallets these days. the security problem there is hiding the seed words. that's been taken care of with some handy burying.