I used to grumble about this job quite a lot. Internally, mind you. In my thoughts. This is gross. I don't like it. It's hard. I'm old. And so on. You know what? That didn't make it any easier.
When my kids complain, "WHY do we have to do this," I tell them why. (School obligation, raising money for the athletics programs, etc.) They usually say, "But it's so disgusting picking up garbage!" I tell them the same thing I have told myself.