Exactly.. I was a Crystal enthusiast, but because of their slow development pace and small community, half-baked documentation (all understandable, no critics here) and the raise of Go (great documentation, fast pace development, huge community), was hard to keep focus on that. Go became my option to ruby, and I'm doing fine with that.
I think windows is the main thing holding crystal back. I make little games for jams and I'm always trying out new languages. I submitted a bug related to running processes on windows last november, it was just recently closed as completed. Although I spend almost all of my at-home time on linux, I know that I have to provided windows executables for jams. I plan to come back to crystal when I can write once and can compile the same code everywhere.