I have one travel brush which I only use on the road, and I have one great shaving brush that I love which is a kent bk8. I want my kent to last as long as possible, is it healthy for the brush to use it every day or every other day, or is it best to have at least two brushes so your only using the brush maybe every 3 -4 days. I cant imagine it matters, and the more I think about it, the more I think I am asking for justification in eventualyl buying a new brush when I start working again, but out of curiosity, how many brushes do you think I need in order to not over use my current brush?