OK so early on in my career, dispatched for the working code in a very nice neighborhood in a multi-million dollar home. Go in with my equipment, and see a guy high as a kite doing CPR on his very much alive wife/gf. I look around and notice there are guns strategically placed throughout the house. I find an excuse to back out, but that very easily could have ended badly.
Point is, not every situation that is dangerous is obvious. You get exposed to a lot even when you have the best scene safety skills.
You should care if a drug user or drunk dies. While I am all for securing a scene first, if the patient died because I was waiting around, I can't lie and say I wouldn't be affected.