I should backtrack a tiny bit before I'm downvoted to oblivion.

I'm not opposed to libraries to handle a lot of stuff (like auth, crypto, and file I/O). I think it's typically irresponsible to reinvent these things for any reason other than "it's a fun personal project".

What I dislike about a lot of the frameworks is how locked-in I feel. There's (often) only one way to do things, and I don't always feel it's the best way, like my aforementioned parsing logic.