Bipolar Tortoise Disorder?
No, just pragmatic and realistic. In order to be extremely happy, then everything and I do mean everything would have to go precisely the way I want it to. There would never be any circumstances where I wished things were different, or that something had not happened or that something should have happened differently.
In order to be extremely unhappy then those things would have to be the norm, where nothing happens the way I want it to, and everything that happens is for the worst.
Either of those extremes happen on some days, but overall it's a combination of both, and in order for me to answer honestly, I've got to go with neither happy nor unhappy, but with the conflict and dichotomy of ambivalence.