I know exactly how you are feeling, July. I have had several days since becoming sober when I have thought how unfair it is that, after working so hard to stay sober, I still have to deal with so much other really, really hard and unpleasant stuff. I feel like yelling, like a 7 year-old does, NOT FAIR! Because it isn't fair.
So, you are right. It isn't fair. And it DOES suck sometimes. But it sucks a lot less than when we were drinking. And, unlike our days of drunkenness, our bad days WILL pass. And our future as sober people is much brighter than it was when we were drunk.
Stay strong. Good luck.