For years I avoided touching any of my computer screens because of nasty finger prints, but alas I've learned to live with smudges etc. on touch-screens. I find that a dirty protective film looks worse than a dirty touch-screen. Tore off the film from the wife's Samsung, and it doesn't look too bad after an occasional wipe with a tissue.
I am with the OP on this one and with Wry too. Yes dirty film looks bad, but you can peel it off and replace it. Under it is a brand new screen. Scratch the actual screen, have fun paying to replace it.