I say things like that because women have such deeply effed up relationships with food, and every conversation around food in the average office seems to constantly be about how "bad" we are for eating things and how many calories/fat grams/carbs are in something. Nobody just enjoys their damn food, and they torture themselves with skinny lattes and Lean Cuisines instead of just eating some real food.
I'm a little upset that you'd assume I was that sort of person who'd rub it in to anyone that she or he wasn't as thin as me. I don't preach at people about their weight, nor do I make snide comments to imply anything of the sort. That's part of why I'm not one of the diet proselytizers. I'm actually a supporter of things like HAES and believe that the primary reason to eat well is for health, and that weight loss may or may not follow. Personally, I have friends whose bodies are all sorts of sizes, and I think they're all awesome. I think perhaps you should check how your own feelings about your body are painting the way you read people on this thread.
I get annoyed because I hate the assumption that I am the size I am because I don't eat. I eat a lot of food because I'm really active, and I am tired of women feeling ashamed of eating. I want to be able to eat a meal without people judging it and assessing my worth and willpower based on what I put on my plate. That messed-up crap around food leads a lot of women (me too in the past) to eat almost nothing in public and then binge in secret, followed by some lovely self-loathing. Yay for surviving eating disorders. If I can show a positive relationship with food, then how am I harming anyone?
I like food. I like eating. I don't know why I should feel guilty for saying it, any more than I should feel guilty for saying that I like to read books and go for walks with my dog. That's a healthy and normal relationship with eating, and I'm not going to be ashamed of enjoying my lunch.