for me its a yes! the main goal of human is happiness whatever human wanted to reach it towards to his/her happiness.
For example why do people want to work? because they want a better life, and if they reach better life they also reach their happiness.
So for you what is the main goal of human?
I think you are right. I do not know people which want to be unhappy

For me it is the great coincidence that exactly you with such a set of DNA exist on this world. This is a great luck. I want to use this wonderful chance and live happily and interesting.