It's a good point to note. Whatever job you are in people will whinge about how bad it is. You can bet your life that most of the whingers are Brits. And yes I am a Brit. Whinging poms the aussies call us and it's true. I lived abroad for 9 years and had an amazing time living a great lifestyle partying, going to the beach, diving, sunbathing, shagging and generally making the most of my life - but it never ceased to amaze me that people doing the same job as me (I worked in casinos) whinged all the time about anything they could think about.
If you don't like it, then get another job and stop moaning! I think McDonalds are recruiting.