Manage your passwords without relying on third-party servers
KeePass addresses a very modern problem: passwords that are strong enough to withstand automated guessing attempts and dictionary attacks are impossible for most humans to remember, so it does the remembering for you.
Because you really shouldn’t use the same password on multiple sites. It’s a really dangerous idea, because if one site gets hacked and your personal details compromised, then the same logins enable the crooks to get into every other service or site you use.