It's not just because they are maids that maid porn is hot and interesting. It's the clothes. Most maid porn is a type of uniform porn where men like to play different roles. Japanese porn stars are often seen in maid porn because maid uniforms look like sailor uniforms, which are very popular in Japan. Another thing is that, again, it's against the rules to fuck a maid. Between a house member and a maid, there is a clear social order. The maid should be lower on the social ladder than the person living in the house. In many stories, the father or brother of the family tells the maid to do crazy things, like sweep or wipe the floor until she can see her underwear. In real life, it's not likely to have a hot, pretty maid, but in Japanese porn and other maid porn, this is the case. A cute, fine lady in a maid uniform is hot, especially if she's wearing a skirt. In a maid uniform, you also have control over them. You are their master and can tell them what to do, and they are your servants and will do what you say. The idea that you can't sleep with the maid is what started the taboo, which is obviously not true in porn. In a lot of maid porn stories, a family member fucks the maid while she is in her uniform and neither the wife nor the other family members know about it.