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Youd be surprised how many set no password at all. I dont think everyone uses a strong password and some wallets are badly defended against brute force attacks as well.
that is silly, if they are serious and have a good amount of BTC i am sure they will lock it up ,if not its simply a recipe for disaster . have't done any testing in a long time, so dont know about all the wallets . if anyone is serious about collecting BTC ,better have a good encryption and find a good wallet.
The argument is that its more likely to lose bitcoin because of a lost password than it is because of a hack. This might be true for some people, but those are usually also good a remembering passwords.