I got paired up with a urologist as part of the mentor program the first year of med school, and I was sorta interested in it until I walked into the procedure room with a guy on the table who had priapism. But get this, he'd had it for a week. He actually went to his private practice doc first and then to another one later and they both couldn't solve the problem. By the time he came to us, it was really one of the worst things I'd ever seen, and it came down to the chief resident resorting to the most primitive ways imaginable trying to get some of the fibrotic blood out. I had to step out of the room to get a drink of water because I felt so bad for the guy. It's like when you see someone in a movie get hit down low and every guy in the audience cringes, except this was a much, much more profound example.
The thing that sucked is that the guy was early in his early 40's and taking an antipsychotic as a sleep medication (can't remember what), but the odds of priapism were 1 in 10,000. At this point, an implant was the only possible mode of even slightly functioning again for him. Needless to say, my chances in picking urology went down that day.