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 agree with you. But every person is happy with different ways. For instance some of them are happy while working or travelling makes some people happy. Therefore people have to think what makes them happy and then they can find main goal of human.