I don't think there are any answers to "why." There are some theories -- is it genetic, or is it to do with the types of hormones we were exposed to in the womb, or is it due to incidents in early childhood development? Nobody really knows, and at this point I'm not sure it matters.
The grass is always greener on the other side of the fence. If you were a woman, you'd suffer discrimination in employment, and you'd be in more danger of stalking and rape.
I wouldn't choose to be a woman out of any feeling that it would be easier. If I could, I'd do it because it would be more fun!
Possibly because she's insecure. Or bored. Or maybe you had already been giving off some feminine cues you didn't notice. (Like the odors from cosmetics, for instance.)
I think a lot of us feel that way. I certainly do. But this is an area where I've started to wonder "why." Ignoring, for the moment, the idea that someone who knows you will recognize you -- let's just talk about strangers -- why is the prospect of being seen as a man wearing a dress and makeup such a horrible thing? I'm still processing that question.
You're in a very hard place, Kayla. If I could help, I surely would!
Seems to me you have a few options, none of them ideal:
You can find safe places to dress the way you want, and keep those places completely segregated from your wife and family. It may be a little late for that, though. Now that your wife is suspicious, spending a weekend in a motel would probably ping her radar.
You can be open and honest with them. Given what you've said about your family, this is likely to cause an uproar. Plus, if my experience is any guide, it's almost impossible to be open and honest when you don't yet have a clear idea who you are or what you want. And they won't give you an opportunity to find out!
You can divorce your wife and gradually build an entirely separate life for yourself, surrounding yourself with people who will accept you. This is easier for some of us than others -- it depends on the nature of your career, for starters. If you have a career like automobile sales, which is highly portable, then moving to SF or LA might be an option. If you're operating a family-owned farm, for instance, your options will be much more limited.
I have to say, from your description your wife does not seem to be a very nice person. (I'm aware that there are two "stories" in every relationship. You may not have been perfect either.) Are the benefits of being married to her really worth the emotional cost? Only you can answer that, in your own heart.
***Jenna Lynne***