Really, using the term "security" guard in most instances is absurd. Ask most any "security" guard what he has been told his job duty is, and he will tell you it is to "observe and report."
Not totally true when i worked for Castalloy / Ion (they made rims for harley davidson) the contract specified checking water levels, pulling dipsticks out of tanks to measure the level, checking furnis temperature checks having to call out an engineer if it got too hot or too cold, one job was to monitor the level of a certain bay if it rained too much it would overflow now the last time it overflowed toxic chemicals were released into the normal sewers and SA water fined them $250,000 for it now security were being held responsible for this and if we failed to do our job we could end up in court no laughing matter, i know a gaurd who had to check a pump, this pump decided to catch fire he turned it off, if he had not of done so who knows what would have happened, another job was to switch on the oven and switch it off pulling the chain lifting up the gate ... none of which we were trained for none of which was in the job description but the contracts employers agree to, to get the job can often take advantage "do this do that" nobody else will agree so whoever does gets the job, it's really quite pathetic.
I got so pissed off with all this "extra" work half expecting you to be a worker as well as doing your own job, i mean security are the first ones to get the call we forward it on, we're the ones who have to deal with bomb threats, we're the ones who have to deal with all the prank phone calls, do I expect someone who puts molten metal liquid into a mold to do my job? so why should i should i have to do their job.
I know security get looked down on, but you try spending the day handing out keys, stopping every single vehicle that enters and looking in the back, signing books to say who's in and who's out as well as taking phone calls, i would quite often be alone dealing with 5 calls in a row leaving a queue of 5 or 6 cars as well as huge trucks, i would spend most of the morning with people complaining i'm holding them up because i have to do what i'm told, while that's going on i also had to sign taxi vouchers for workers who were ill or had accidents to take them off to the hospital, sign pieces of paper so a person can go and unload the truck while that's going on i had to issue keys to people and to top it off every 40 minutes i had to patrol locking down the front gates having to rush back when a truck came...
to put it simple, if you're unlucky security is a stressful job, nobody's happy and when the sh*t hits the fan you're the one who has to explain why you let something get stolen either from an employee or because you never wrapped the chain around the all gates properly and locked all the locks, as you can tell from my tone i absolutely hated this job..
Crowd Control, interesting but always concerned about getting hurt breaking up fights, stopping brawls, dealing with angry customers, i've seen it all..
As for night work doing patrols, yeah easy enough and you don't get paid much but as someone else pointed out, almost every other officer i've worked with have all pointed out how they got hurt or came close to being seriously hurt from idiots who decide to try and stab you, one guy was in his patrol car he rolled down the window a guy a few meters away said "hey mate what's the time" next thing he knew he lunged at him through the window with the screwdriver luckily he managed to duck out the way.. you might feel a little nervous coming home on a dark night to your own home you don't know who's lurking in the shadows but if that's your job to go into those shadows there's that constant worry....
so instead of just mocking security please have a little respect this might be you one day for whatever reason that is and believe me, $10 an hour is not worth your life.