I’ve been in theater for 30 years, and don’t buy into actors being particularly traumatized. They do tend to have empathy and imagination which lets them step into another person’s body and soul - well, if they are any good. Most actors are journeymen. It is generally the stars who get hooked on drugs, sex and mayhem.
Maybe that's it. I'm not reading the biographies of the common career stage actor, but the big movie stars.
They do get hooked on the high produced by being worshiped by their fans, especially when performing live. Like any high, they build a tolerance to the substance producing the high, and require increasing amounts to produce the same level of intoxication.
When their celebrity status either disappears or can no longer provide the same buzz, they rely on booze, drugs, and sex do the job.
Does that sound correct?
For a second I thought meant you had been in a war zone for that long (different context, obviously).