We expats came here to Qatar for a reason and that is to fulfill our dreams which we could not achieve by staying in our old jobs back home.
So when I see people living in luxury homes, driving 'fancy' cars, having 'fancy' clothes, tv, etc. I do not look at it as 'showing off'. Rather I think of it as their way of saying to themselves that 'hey self, I have finally arrived!' or 'Self, I have fulfilled my dream.'
For myself my dream is to buy a plot of land and build our dream home back in my country. People back home may think I am showing off but it is just a fulfillment of my dream.
What is bad is if you lose respect for others who are still trying to fulfill their dreams because that is really showing off. But then in the same manner if you disrespect those who have fulfilled their dreams then that is envy.
Let's respect each other and the world or at least Qatar will be a better place. Peace !