I love gaining weight and getting fatter.
I've always been a little bit chubby but within the last year I decided to just say f*** it because I know I'll never be thin. I was originally really tiny at 120 and 5'0", but now I've ballooned up and at 230 pounds I've gained over 100 pounds more and I'm still trying to get fatter. I love stepping on the scale and seeing that I've gotten heavier, I love outgrowing old clothes, and I love eating until I'm so stuffed that I'm in pain, because I know it'll make me bigger. My boyfriend also helps a fair bit with encouragement, but most of what I've gained has just been because I like being massively obese.
If I didnt like it I'd probably worry about eating myself to death because of how often and how much I eat, but because I love being fat I'm not afraid to stuff myself silly and get bigger and bigger. I've been gaining like crazy recently and the pounds have just been piling on, and I dont think I'm going to stop any time soon.