In hindsight the bench top would have been better done in a stained wood. I am having the same problem with a white painted desktop that I thought would be ok because I am careful and the only one using it, but the front edge is not wearing well. I will probably have the whole top replaced in the near future and go with stained wood or quartzite/quartz.

For you, I would have suggested custom cushions, but you seem to be using it more as a shelf than a bench.