Yes and mostly yes. I have a lot less interest in tinkering with things at home these days after working on computers all day. I do QA so my job is basically to break things and help get them fixed, so when I go home I don't feel like dealing with things that are broken which limits my tinkering. I've been trying to get myself focused on a few different tech hobbies that have faded over time. For one, Android development, and two, playing with my arduino. Phones have taken over 90% of my tech hobby time these days.
How many people are using Windows / Mac / Linux for day to day work?
Well, I work for IBM, so no Mac, haha. But I regularly use RHEL, SLES, VMWare, and Windows.