I'll never understand this attitude. Are some people contributing to open source principally for a kind of quid-pro-quo? I think it's nice when people contribute back, but it's certainly not a motivation for me to open source stuff - other than to set an example. People can do what they want with the software, that's the whole point.

Full disclosure, I'm a shitty open source contributor, but I have some projects on github that I know others have gotten use from, and that makes me happy, not concerned someone is "freeloading".