MK, I'm not exactly sure why you posted the question. Like any other generally 'forbidden' activity, you will have a bell curve of opinions about it being acceptable or not. Some are o.k., some are indifferent, some hate it. I'm fine with who I am, but I know very well that there are a lot of so called 'normal' folks out there that would just as soon see me dead rather than interact with me. Now then:
I accept everyone. sad to say society doesn't. gays and lesbians are widely accepted in this country
Uh, no. They're tolerated. Despite the indifference displayed in some major urban areas, most of the population doesn't like homosexuality. Don't believe me? Check out all the backlash against homosexual marriage laws.

Females crossdress all of the time and it isn't an issue, so why is it for us.
Well, they don't do it all the time. For most women, the extent of their crossdressing is putting on a guy's oxford shirt as a robe as she romps off to the bathroom after a night at his place. The rest of the so called ftm crossdressing is simply women who are wearing clothing that is specifically tailored for them, in woman's sizes, of types that was previously commonly worn only by men about a century ago. Only very rarely (if ever) do we see any straight women wearing mens jockey shorts, men's shoes, or other men's attire (you usually can tell by which side they button/zipper up, well, most of the time anyway). Even jeans that women wear are 99.9% of the time only those that have been designed to be worn by the female form; our bodies shapes are different, until you get to the point where the person is a real porker. The normal approximate 70% waist/hip ratio female body cannot fit well into a standard male pair of trousers or shorts. Sure, she can get them on, but they'll usually fall off without a belt, and will never fit correctly.

As for why it acceptable for women to don men's clothes and not the opposite, well, there are many threads addressing this concept, but they are locked, so you'll have to do a search because they will not be anywhere near the top of the thread list.