Also, you have no feedback when you deal with such people. You can't ask them what they want, because they don't know. Nor, if you just guess, can you tell what they liked and what they didn't. The only thing they are guaranteed to like is a pre-established brand with a demonstrable following and revenue stream.

In a relationship, on the other hand, it's very convenient being able to (a) do things and (b) look at your SO's face and listen to what she says. A sudden blow to the side of your head means bad. A striptease means good. Over time, you can learn and improve. You know you're doing well when there are twice as many stripteases as blows to the head.