Morbidly A Beast:
I don’t understand the angle here at all, like it would be nice to have someone pay for my food and stuff; I can easily spend 500-600 dollars just on food in 1 weekend just on food but I don’t understand the wanting to pay for it, like I don’t even wanna pay for my own food and food brings me joy, I don’t understand wanting to pay for someone else is that like financial fem dom stuff or something. I might be a pig but I’m not a pay pig
There's multiple reasons.
For example, practicality. Fattening up is expensive. So if a feeder wants to fatten a feedee, it makes sense to provide the food in whole or in part. This is especially true if a feeder wants the feedee to eat something or somewhere specific.
Other feeders like being directly responsible for the feedee's weight gain. If they can cook and/or hand feed the feedee themselves, paying for the food is the next best thing.
In my case, I buy my partner food because I love spoiling him. He never asks me for anything, so it's all the sweeter when I surprise him with something that he enjoys.
Gotta remember that not everyone enjoys the same things you do and vice versa.