What I also find fascinating is why eating out for many means gluttony is part of the experience. eg. I have a rather overweight, intelligent friend who has just started a diet, says he really wants to lose weight, yet went out for dinner recently and ate the largest steak on the menu, plus starter and dessert. He told me how he was so uncomfortably full afterwards he had trouble sleeping that night! WTF is that all about?! Surely he couldn't enjoyed the experience just as much with a smaller steak
I'm also confused by this. So many people say things like 'if I'm going out to eat, it's a treat so I want to go all out'.
To me, eating food out is about having something I can't easily replicate at home, either because it's complicated, fiddly, requires lots of ingredients, time consuming, or just hard to get right. So I make sure I get something like that, rather than something that's quick and easy to make just as nice at home, like steak.
And I'd much rather eat the amount I need to be just full, rather than stuffing my face, feeling ill and being unable to sleep. Which also means I have some left to enjoy the next day. I do this pretty much every time I eat out or get a takeaway, so have had reheated leftovers hundreds of times, probably thousands without issue, and find it very odd that people won't do this.