It takes time for the bitcoin community to learn how to secure bitcoin. This is new technologies and many people will lose their bitcoin from here to the future.
true enough but people will still lose them security or not.
People will leave bitcents on wallets and not care if they reformat.
people will back up their wallets and keep the backups inhouse on another machine and lose them all to fire.
there are also paper bitcoins out there. That people sell on college campuses, that are basically the keys to a wallet.. I'm sure these get lost now and then before the college kid figures out bitcoin and transfers them over.
People will leave them on sites all over the place.. i know I have bitcents on more sites than I care to look for.
I guess it isnt a real issue or anything but it is interesting and makes me wonder how many will actually be in circulation in 10 years