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?
T me the main goal of being human is to find your purpose. It kight be to find your happiness or to find it in other people. SO long as you do it morally and also that fills up your soul then that could be the purpose in which you are created.
There are so many things humans aim for, happiness is just one of them. Since the premise is it being a main goal, I think I can say that it's on top of the list because everything that people actually do is aimed for them to be happy or satisfied. However, there are so many other things that a person aims to do or have that may not be quantified within the sphere of happiness.