Your number 4 is the one thing that pisses me off the most. Sometimes I've just badly wanted to take a weight and just smash it in their face, "Oops, sorry!" It's always the fats that take every piece of equipment they need at once and hog them forever. FUCK.  Just the last time I was at the gym these two fats were talking around the benches, their clothes, bags, phones, ipods, beetus bottles, etc taking up tons of space, and each of them had FOUR sets of weights. The most popular ones... just spread all around them. Yakking away. I watched a poor lady go up to them and ask if she could use a 10lb weight and they said that they were using them, picked them up and then just kept talking, once in a while doing a bicep curl.  I think one of my biggest regret in life is that I didn't say anything. Brothers and sisters I have let you down.