I think of "queer" as an umbrella term, including trangender identities. Transgender, also being an umbrella term, includes those who have not-the-norm gender identities and gender expressions.
Using this definition, if you chose to be queer, wouldn't that mean you chose to have a gender identity and/or expression different from the one expected of you by society?
Or does choosing to be queer mean you chose at least one aspect - sexual preference, gender identity, or gender expression.
If you feel you chose your sexual orientation, to what extent do you feel you chose your gender identity? your gender expression?