I love flexibility, from schedules to physical.
I never find real thinking draining or tedious, just the imitation that involves long words which say very little. On that topic, when will scientists write papers that have an average word length below 10 letters and average sentence length below 50 words? I can read them, but it would be so much easier to just communicate clearly and concisely. It would make the paper shorter too. Apparently no one seems to have figured this out though and they use the last woefully written piece of crap as a template for the next one. I think I hate my main reference in most projects I work on.
Scared of people making sense? My biggest gripe is that they don't, though at the same time I love the diversity.