So you know what's the best way to move forward, but you're still asking how to not do that. Nice 

I've read not long ago something very interesting: if the people keep their coins in self custody, it's not only that their coins will stay safer, it's also that they'll force the price grow (eg by not allowing exchanges play with fractional reserve).
So think about it: if you don't do it for the sake of your coins' safety, do it for the sake of Bitcoin price I am sure you care about. Deal?