Spends 9 months on the side developing a library for analysis of a specific programming language. No help, entirely my own work. There's various tools built upon this library. Incorporates project management, an effective build system capable of parallel and distributed builds, a packaging system...

Beta release the library. Wait four months. Ask the community for who's been using it so I can get feedback and other comments. Majority of the comments follow a specific pattern.

"You don't support X, how dare you!?"

One, this is free software, pay me if you want specific things.
Two, I'm the only developer of a project usually undertaken by a small team.
Three, yes it does you fucking invalid... Every fucking time someone claims it doesn't support some feature, it's something I've already written and validated. I swear to fucking God users can't find something themselves and instead of checking the Wiki or asking for help, they blindly assume they can't make mistakes and it must be my defect.