But we force users to choose obscure passwords to discourage dictionary attacks (so I thought) not to protect them in case our dbs are hacked. A computer may b

But we force users to choose obscure passwords to discourage dictionary attacks (so I thought) not to protect them in case our dbs are hacked. A computer may be able to obscure a password better than the average user but at the end of the day the user still has to commit that password to memory, which may be why people stick with the same simple passwords to begin with.