I've thought about retiring in Thailand. The reason I've been thinking that way recently is two-fold. I LOVE Thai food. I watch a lot of Mark Wiens videos. He's an American who lives in Thailand, but travels the world doing food videos, but lately, he's been doing a majority of his videos from Thailand.
If you've ever watched a Mark Wiens video, he eats a TON of food and he's a skinny guy. He must get 5-6 dishes at every restaurant he stops at and he sometimes does 4-5 restaurants a day.
What convinced me that Thailand might be the place for me is that he shows how much all this food costs him. He will eat 5-6 dishes at a sitting and the price tag will be like $4.99, if that. So a normal person (a person who eats one dish per meal per sitting) could probably live very comfortably in Thailand on $10-$15 a day, including rent, transportation, etc.