"Its not fair to compare the living environment of one's owen country to feel better just becuause they are used to paying taxes and car parking. "

Sorry but the comparison stands - parking was free in many cities/countries in years past because demand/usage/abuse of the privilege was low.  As it increased the the pay for use system was implemented. 

And what do taxes have to do with the discussion. This has to do with availability/ demand/and abuse of the previous "system".  In the past, you could park your car/chariot/camel/horse/donkey anywhere you wished - you can't now in Doha - where's your complaint about that?