Slicing and dicing the question:
If we see crossdressing as a sub-spectrum of gender, then there are CDers who dress for fetishistic reasons and CDers who dress simply to look like a woman.
There was a time when I would put on lingerie and jump in bed with my spouse. Now, as someone who considers herself to be TG. I want to UNDRESS (from girl to naked) to have an intimate time with my spouse.