Hahah I get the ease of use but I'm oldschool and especially when it comes to passwords. These companies are just fucking lazy with security! One of the password provider apps last year got hacked and leaked everyone's passwords I think. For me that's just not worth it :D.
I don't try to remember all of them like the posting key, which it makes sense to have the keychain app take care of that for me but for other passwords, I feel safer keeping it old school.