I hate when websites have some weird rules for passwords, and show the rule when you are creating the password, but not when entering it. How am I supposed to remember the password must begin and end with a special character?

Ewwww

I think blockchain also has a bad rep because every chance is mirrored to every copy of the blockchain? Thus wasting a lot of power and bandwidth for most use cases. Unlike git, where you only push what you want, and everyone only pulls what they want.