You just stated that when you were young, you didn't do that. So even you have not always taken that responsibility. I'm the same way, sometimes I look for those things, sometimes I don't. I think it is safe to say that close to 100% of people do not evaluate stuff like that on a regular basis. Anybody who does that 100% of the time, probably is paranoid.
I'm not even sure how a person would go about figuring out where all the exits are in a crowded night spot. Since normally it is too dark to see, and too crowded to move around a lot. Simply knowing where you came in is not enough, if that exit gets blocked by fire. That's why we rely on the government to make sure that establishments are up to code. Unfortunately they failed in this case.
I was responding to Eloise who had said that we should not have to, b/c it is the responsibility of the club owners. Yes, it is their responsibility, however, humans are fallible (there are more warehouses than this one, underground clubs, poorly marked exits, cramped quarters, etc...). If you read my post, I stated that back when I was younger, no, I didn't always take note,if ever, but, due to being older, wiser, and most importantly changing times,
I do a cursory check of my surroundings when I go into any facility now. Be it a restaurant, motel, concert arena, or movie theater., and yes, in crowded situations, I do it every time, even in a mall. I don't rely on anyone to save me. I'm a biker and everyone is wearing these watch out for biker shirts and posting watch out for the bikers memes, not me,
I watch out for
me and it'ssaved my life on more than one occasion. I am responsible for me, I don't take it for granted that anyone else is looking out for my best interests. Just passing on a bit of life lesson in hopes someone may benefit (from someone who's been around the block a time or two).
Edit: If it's too dark to see the exit when you come in, how are you going to see it when the lights go out and the room is full of smoke or there's an active shooter? No, I'm not paranoid, but I am safety conscious these days.