Life / Why are Poles always so miserable? Why do they never smile? [512]

Yes. I feel exactly the same. After living for a few years abroad, I moved back to Poland over 6 months ago and still can't get used to this mentality. I thought it would be easier because after all, this is my home country and I've spent most of my life here.. but people arguing about small things, on trams, in shops and low standard of customer service - it is kind of bothering me.