Actually, disabling substances are used in the vast majority of rapes. The most common is alcohol (trying to get the victim too drunk to resist or looking for someone who already is, in about two thirds of rapes), but drugs are used in about 20% of additional rapes. Very, very few rapes follow the classic Hollywood script of "stranger leaps out of the bushes with a knife" - so vanishingly few that the scenario is statistically almost nonexistant. Disabling substances are extremely popular because 1) they work very well, 2) the victim often can't remember the attacker well if at all, 3) the victim is not in a state to be making a report until long after the event, 4) the victim's ability to make legally reliable testimony is compromised. Why would people choose the Hollywood way over that?
And I'm sorry, but if you think that you can watch everything you consume every second of every evening you're out and not slip up, you're an idiot. And yes, the reason people get mad at people like you is that the problem is that there are people out there drugging other peoples' drinks en masse and thinking that this is acceptable behavior, not that victims haven't gained supernatural abilities to hyperfocus on everything they may potentially consume at all times and never slip up. "Look, I'm sorry that you're dying of pancreatic cancer, but you should have been getting pancreatic function tests daily and working two jobs to pay for weekly MRI scans to find it before it could have posed a threat to you, and because you weren't, it's your own damned fault, and don't act like I'm a jerk for pointing this out!" That's how you come across when you take that tack. The problem is the f***ing cancer, not the victim.