i store all my passwords / keys using a password program like keepass what is however encrypted, too, with a more simple password but still hard to guess 
So I'm guessing you can't remember all of them. Do you store them somewhere in an encrypted file ? You see at that point there's really no difference to a "wallet.dat" anymore 
keep in mind popular password savers are going to be a target for hackers as they know the mother load of passwords is going to reside there. one trojan keylogger and your done.... its best to always have a secondary device to give authorization. its much harder to comprise your phone + your desktop.