This whole thing is very subjective, and will always depend on circumstances.

In my interaction with Qataris, I found them honest and decent people, but this is my impression, I am Omani, so it may have to do with that.

I take some offence though from what gam2029 wrote, what you have experienced can not be generalised on the whole country. I have a very bad experience in Tokyo, but that does not mean all Japanese are bad. In every nation, there are the good, the bad, and the outright horrible. As for not being able to sue the Sheikh owner of a mall, no one told you that Qatar is a parliamentary democracy, the country is a monarchy, and this is how monarchies without parliament are, so be a man and deal with it as men would.