There is another thread questioning how accepting you would be if someone you knew came out as trans.

I've been out to a large number of TGs who I thought were "Just a Crossdresser". I was kind of thrown for a loop when they decided to transition to become full-time, post-op transwomen. Not that I had a problem with it. How can a CD have and objection to someone deciding to live as the girl inside. I was just kind of surprised.

I've also had private conversations with friends about how far they would go if life/circumstances were different.