Qatar is no way to compare with Dubai..there is a Big Difference in infrastructure as well as people's mentality. Dubai is expensive as its one of the top tourist destination.
The time Qatar reach Dubai standards, Qatar will be more than twice as expensive as Dubai.
Anyways, i dont still find Qatar worth being 2nd most expensive country. But very true it is a very safe & a good for family place. You still can save as you get less opportunity to spend. :)

~noms~
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"Before God we are all equally wise ' and equally foolish" - Albert Einstein