Personal Opinion but I do believe happiness matters. Although your statement can be true also. When people feel like they have achieved true happiness they want to stay in that place in their lives for fear of it going away. This feeling of contempt with the way their life is, causes them to stop pursuing goals, ideas, new moments, etc. Therefore, making them lazy and ineffective. On the other hand, if an individual spends their whole lives pursuing a dream or dedicating their entire lives to an idea or work, but are not happy then what is it all truly for. Happiness is what everyone should strive for.
