Childhood, we only feel happiness.
Married, we have so many things to feel, bad or good things with someone we love.
Unmarried, we have so many things to feel, but we don't have other people who always beside us, except our family and friends.

Based on that, as long as you can enjoy your life and be always grateful, you will have the best life.

And as what @Mauser said, everything must be balanced so that you can have the best life.