One afternoon I found myself bored at the office, looking through Craigslist mainly for freelance gigs, which led to looking at pets, which led to new apartments, which led to missed connections, which led to the personal ads. (CL is magic.)
Lo and behold, what do I find but an ad looking for local lactating women. This 19 year old kid just wanted some fresh milk from a milf. Before I knew it, I was looking up erotic lactation and couldn't believe all the information found on it.
The idea of this fetish isn't at all shocking and the psychology behind is seems fairly simple. I suppose what surprises me most is my lack of research on it prior to reading this CL ad.
Lactation fuels adult nursing relationships (or ANRs) where the woman breast feeds her SO. Breast milk can be a reward in a BDSM relationship or milking could be an act in a Dom/sub relationship. It also plays a part in another fetish, infantilism, which is the fetishization of baby talk. You can imagine how that one plays out.
Lactating women can even be prostituted. In 2003, a New Zealand brothel was reported to have a lactating worker selling her breast milk to clients.
Welp, the more you know.