That Has to Count for Something, Right?

What does it mean to be really good at something that you see little to no value in? It seems that I am actually quite good at my job. Sometimes I even feel good about the fact that I'm good at it, then I remember that it's basically meaningless and I just feel like a fool for forgetting that in the first place. At least once a week I have a customer tell me how nice, or friendly, or helpful I am. The other night one of the managers told me that I am one of the only cashiers whose judgement she trusts. Today I heard that I helped the store to get a nearly perfect score form a "secret shopper" because I did such a good job of helping her when she came in. Also, I have had tons of customers, some who I didn't even recognize, tell me how happy they are that I'm back. Sometimes I think all of that has to count for something, but then other times I think "Are you serious? You're a fucking cashier! Nothing you do counts for anything."

I suppose it could be worse. At least I don't work at the Doublemeat Palace.