I would say that the thrill of doing it is addicting for a while.
The rush of endorphins:
- When I first made breasts out of socks and stuffed them up my shirt.
- When I first "borrowed" clothes.
- When I first "borrowed" knee-high boots.
- When I first "borrowed" a one-piece swimsuit and put socks in it.
- When I made my first forms from 12" balloons filled just enough with water.
- When I ordered my first bra online, then again when I filled it with balloons.
- When I tucked for the first time.
- When I finally got a proper pair of breastforms and used them the first few times.
- The first time I shaved my legs and chest completely.
- The first time I used self-adhesive breastforms.
- The first time I wore a wig...
And so on. But the strange thing was, the more often I did it, the further the thrill went away. As it began to become a regular thing, there was no sexual thrill anymore. I was just being my other half for the first time.
It's only addicting if you make it addictive. Otherwise you're just becoming who you really are.