I cook my own food. Always.
I am the only one at work (game company, 200+ people) that doesn't order food, I just bring my own. Thai-based food, Japan-based food, Ukraine-based food, all entirely selfmade. I actually had to get a microwave placed just for me (though some people use it to heat their instant food stuff they bought)
That seems to be pretty unusual, actually cooking properly. I hate processed meals, I want the taste to come from actual food, not from chemistry.
Next weird thing: I count calories obsessively. No, I'm not a diet nut. Far from it. I do so to make sure I eat enough. If left to my own devices, I'd eat some fruits, some salad, and I'd be done. Unfortunately, that kills my organs to lack of nutritition, so I have to count to make sure I at least eat enough/day :/