I stayed with DotA because HoN has way too many "dark side" references...more so than DotA had. As such I also don't play games like Diablo due to my Christian views so it annoyed me that the "new DotA" crossed one of my personal lines.
Personally, and to stay on topic here, I never thought that DotA should be something that's "owned" by a company. I always thought that the real successor to DotA would come out when Warcraft 4 has been released in the next 100 years and it would be a community-made modification. So I actually agree with guinsoo and those guys.