Forced feminization can be a contentious topic. Some find it highly insulting, others find it incredibly sexy, while still others are indifferent or somewhere in the middle.
People often take issue with the “forced” part of the phrase. No, it’s not truly forced, I agree. It’s more often something the domme pressures or orders the sub/slave to do. There’s no gun to anyone’s head. There may be threats involved (e.g. you’d better do this, or I’m locking you in chastity for two years) but it’s not truly forced.
By far the biggest issue people take with forced fem is that they assume all the practitioners of forced fem see femininity itself as humiliating, thus being insulting to women. That’s a valid point, but only if the practitioners in question actually do see it that way. I don’t view it this way personally. I rather like femininity. In fact, I find it beautiful. I’m much more attracted to feminine women than butch women. Femininity is a big plus in my book. Femininity can be sexy, and it’s the flavor of sexy I go for. While I try to be the masculine flavor of sexy, I fall for feminine sexy.
The draw of forced fem to me is multi-tiered. Yes, I find it erotically humiliating, but not because of being made feminine. It’s that I’m being made (even if temporarily) to look like something I’m not. I’m a man being pushed into what is essentially a caricature of femininity. On top of that, I don’t even come close to passing, so some of the humiliation comes from that as well. Another thing that gives this type of play an edge is that it’s semi-taboo in society; men who dress as women are often laughed at. Plus there’s a big d/s element there for me. This is one of the more prevalent aspects of forced fem that I get into. I can’t be pushed really hard with forced fem (or most other things) with just anyone; there’s got to be a strong d/s dynamic in place for this to work. So I get the charge of being dominated, made to do something I don’t want to do, when we engage in this. There’s a heavy control aspect with this, especially if it’s in public. It seems doing this in public magnifies the humiliation as well as the d/s component. So there you have a tangled knot of reasons I find this a worthwhile form of play.