To find such thoughts interesting

Sometimes, on my own (which is a dangerous place). I like to think of events in history that are offensive and sick and I get turned on.

I find it a big turn on when people tell me about the problems in their lives.
The other day in fact a friend was telling me about how his pet dog bit his hand and he bled and the dog got put down, that night I had one of the best wanks of my life.

Sometimes, if I am really horny I read about the holocaust because nothing gets me off more than that.

I've considered becoming a counselor or a psychiatrist to quench my sexual urges.
I am somewhat worried about this being normal and was curious if anyone else had such urges in their lives? Should I really be having these thoughts?

I can give another explanation in fact to see if this is as normal as I like to pretend it is.

A while ago, can't remember when but I was reading a news story in a paper on a train about a person who had been walking home late one night and was inebriated and by chance happened to stumble on to a road and get hit by a moving vehicle.
Can't remember if it was a bus or another large vehicle. But that doesn't really matter.
By this point in the article I was pretty much at breaking point but I carried on reading.
The family of said killed person told the newspaper about their heart break and anguish and how their son or brother was studying hard to become a doctor and they had lost on of their stars.
I jumped up from my seat to run to the toilet to relive myself.

Should I be finding things so sexual?