You asked about statistics how often I use something. That's very different from the question if I use something at all.
The former tells you something about my habits and my work flow, while the latter only tell you something about my choice of tools.
I'm a bit picky about privacy, and don't want to disclose some information about me, not even anonymously. I don't like the notion of being profiled. The problem with detailed usage statistics is that I don't know how much you could do with them (because I never tried something like this myself).