The mankind is confused with 'Comfort' & 'Happiness'. Scientific discoveries and inventions brought so many gadgets that made human life more comfortable. On the other hand comfort robbed our physical activities which are vital for us to be healthy.
Human beings are deluded thinking 'if we are comfortable we will be happy'. Unfortunately there is no cause & effect relationship between Comfort & happiness. Sleeping in a water bed is comfortable but does not guarantee happiness. One may lie down in the water bed and may be "Comfortably Unhappy".
Don't chase wealth for comfort thinking you will be happy if you are comfortable. There are rich people travel comfortably in Mercedes S -class with a miserable state of mind! Happiness is a state of mind which has nothing to do with comfort.
Hope you must have seen people sleeping below the bridge very deeply as compared to us sleeping in soft bed in an air conditioned room miserable waking up every one hour.
With whole of my heart