For me it's both. I'm not going to work on a project for the sake of open source, but ideology is a big part of why I choose to release my code under an open so

For me it's both. I'm not going to work on a project for the sake of open source, but ideology is a big part of why I choose to release my code under an open source license. In fact, if I need something that I think would be useful to the community (or myself on other projects), I'll build it on my own time and then do bugfixes and whatnot on company time. People are all over the spectrum, with people like Stallman and developers at the FSF working mostly on ideological grounds and companies like Oracle only contributing when it would clearly be beneficial to the bottom line. I used to think I would love to work on OSS if I didn't need money, but I've found that I just like working on stuff, and OSS isn't as much of a priority anymore.