Comment by kick

In order from most to least, all concerns but some that I'm usually happy overlooking:

* Poorly-implemented versions of theoretically-interesting ideas

* Poor implementations, technically

* Lacking merit compared to its best competitor (insofar as free software has competitors)

* Lacking merit compared to its main competitor

* Deep philosophical and moral disagreements

* Toxic and obnoxious community

This isn't to say it's bad, of course. It's just something I dislike; I seek no wider war.