I for one believe in happiness. For me happiness is essential. And contentment I believe is linked with it. To be happy and content is a great blessing IMO. And it is what our religion teaches us as well. In a hadith we learn that our Prophet said " "There is no harm in wealth for him who fears Allah, Who is Great and Glorious, but for him who fears Allah health is better than wealth, and a happy frame of mind is one of Allah's favours."(At Tirmidi)

 Happiness is something I constantly seek out and sadness I seek refuge from.