This is an excellent point which so many ignore, having been "taught" or conditioned that crisscrossing is shameful or something"less than" or "bad/dirty".
In fact it was generally accepted and in fact Lilly Elbe, ostensibly the first "sex change", was a celebrated transvestite.
Yes... it's a much easier and more peaceful option if it can suffice. I'm curious why just about everyone seems to ignore it off hand, and insists on immediate medical intervention. After all, like Dena mentioned a one year "real life experiment" used to be a standard prerequisite... and in truth I've come to wonder whether its secondary purpose might not have been to eliminate any shame and guilt associated with crossdressing.
What made me come up with with this theory is an acquaintance who was literally driven to suicide by the despair of ultimately not being able to suppress his need to be female at least occasionally and in private. He was only found and resuscitated through a miracle. And the doctors at the psychiatric hospital he was taken to were both understanding and smart.
Their official, formal prescription was to crossdress. As much as he possibly could, in all situations he possibly could. And... that rid him of the shackles of guilt and shame he'd carried all his life.
He did later separate from his wife, because she couldn't forgive him for having kept his need a secret from her for so long. But he's adjusted, continuing to live as a woman as per doctor's orders, and only going out as a man when he absolutely needs to. No need for surgery... and while he does self-medicate, even his daily hormone dose is well below transition levels.
(Edit: I checked... 1/100 of what I'm taking.) But—judging from the very occasional conversations we've had when I've visited the area where he lives, he seems increasingly peaceful and content now that he's rid of all guilt. He told me he feels no need for even a name or documentary sex change. Which is why I use the male pronoun...
It's pretty obvious that even if this kind of guilt removal was their ulterior purpose, the doctors in the past couldn't very well have prescribed mandatory cross-dressing to non-suicidal patients... so they'd have had to make it a prerequisite for other treatment. LOL...
It's an interesting theory in any case. And an eminently successful treatment strategy, at least where this particular acquaintance is concerned...
I couldn't understand him when we first met... but now realize this is just another example of how our stories can differ.