Happiness is an emotion that comes and goes like the wind. Whether a person is single or married, they can be happy at times. Whether a person is experiencing the emotion of happiness more frequently married as opposed to being single, really depends on any number of variables. I have told myself and my wife, that marriage is not all about happiness as many give the impression. Marriage is not all about an emotion that comes and goes like the wind. If marriage were based on emotions, it too would come and go like the wind. I think it is a common problem with people, getting carried away in their emotions, so as to be governed by them, rather than the Spirit of God. Stability and contentment is found in none but Christ alone. Enjoy the happy times while they last, but life is full of seasons, and we have to learn to take the good with bad, and persevere through unhappy times.