Right, Buddhism does not conclude that life is suffering, but it begins its investigation into the problem of life by positing that everything is suffering. Is Buddhism a pessimistic philosophy? Not at all, it maintains that suffering can be transcended and life can be celebrated amidst the sorrow. But the modern psychiatric doctrine that if you are not happy, that is some sort of “disorder” seems to me just specious. Why is everything a disorder? Let us celebrate our limitations without feeling guilty that we are somehow “wrong” for being sad or depressed.