I was being lazy. That lattice must weigh 200lb. http://i42.photobu...12MUCHStronger.jpg "Someone noticing" was not an issue at this site as that window is around back and not accessible by vehicle. I am not sure how anyone found it to follow in my footsteps to be honest, but I digress. Here is a numbered list.
You could get caught. -If security does notice your entry location you will be easily spotted returning.
You could get caught. -If they do notice it they will lock the place down and getting back in will suck.
Someone could follow you. -Another UER may not appreciate an obvious security breach you caused. Finding a way in is half the fun.
Someone could follow you. -Vandals, miscreants, and other people you may not want to meet in a dark abandoned building for instance.
Plus, you could get caught, and that is bad. So Yeah.