Just joined this forum, what a thread to find! My answer is yes, I have and I will. I'm bi, which I discovered over 30 years ago, and enjoy sex in all forms so long as two (or more
) people make a connection and are into one another. I've been married for 23 years to a lovely lady, and can't imagine my life without her. I also have two transgendered friends, or shemales if you prefer, who I have had sex with many times. My wife, God bless her, knows and supports my extracurricular activities, with the caveat that I play safe.
I have been with maybe 6 shemales all told, but only with the two mentioned above have I really connected as a friend and lover, and they satisfy my urges completely. They are both very beautiful women who are "unclockable" to the average person--one of them is an absolute stunner, in fact--and they are both very horny girls who just love to get it on. I'd say their sexual energy is different to either a man's or a woman's, due both to their highly feminized psychology and hormonal changes. They have both identified as girls all or most of their lives; I know one of them (now 25) began hormone treatments at age 12. She's a hot Thai pepper, while my other friend is a French-Mexican Latina. My life is much richer with them in it, so I will never look back.
As a bisexual male, I have always greatly enjoyed the sexual pleasures available to both sexes, but have never been actually attracted to a man (other than for sex). A beautiful shemale, for me, combines as they say "the best of both worlds", a beautiful, sexy woman who has "something extra".