No one gets to choose their sexual orientation or their God given anatomy any more than they choose to be tall, short, intellectually gifted or mentally challenged.
Historically, I can only think of the reprehensible ways that people have been ridiculed, shamed, insulted, shunned, physically assaulted and even murdered for being gay, transgender and all the shades in between.
Re: Questionnaire: Just remember that A. Whatever goes on record, can remain so for a very long time. B. A government run healthcare system can use that kind of information for many different reasons. C. You should be under no obligation to respond.