IMO..There are gluttons who are usually unaware of their being one until told...
The chief error about Gluttony is to think it only pertains to food. Some people can't have enough toys, television, entertainment, sex, or company. It is about an excess of anything. There are at least three forms of Gluttony: Wanting more pleasure from something than it was made for. Wanting it exactly our way (delicacy). Demanding too much from people (excessive desire for other people's time or presence). www