My guy and I are in our seventies ,living together very happily, but find no need to marry. Yes,loneliness is the worst thing in the world, but I wouldnt want to live with someone to stop that, you need to love and be loved,share the same interests (well,most of them) and be able to laugh a lot and enjoy each other's company, but if couples do want to marry then go ahead. I hasten to add my very straight laced father will be rolling in his grave at his daughter living 'over the broom' but our respective families are both very happy for us