I'm realising these days, that I'm simply an underwear fetishist. By reading a wikipedia article on the topic I felt somehow relieved, that it is a known phenomenon. Perhaps it can be an addiction, but it seems like nothing more than a distraction of different (individual) proportions.

Underwear fetishism is a sexual fetishism relating to undergarments, and refers to the sexual excitement which some people experience from observing or handling certain types of underwear. Some people experience sexual excitement from wearing certain types of underwear. Other people experience sexual excitement when observing or handling certain types of underwear worn by another, or watching somebody putting underwear on, or taking it off. Not only does this include physical contact with the garment(s), but also includes arousal by printed material or electronic material that includes underwear. Underwear fetishism is not considered as paraphilia unless it causes distress or serious problems for the person or those associated with him or her.

(from pears-of-eccentrica-gallumbits tumblr)