i hope this doesn't mean that i am a bad catdaddy, but i have owned both my cats, Zip and Shy, for over ten years now and have never trimmed their nails once...they have so many things to scratch(besides my furniture), and i constantly find nail sheaths around, i have never seen the need...they have never had any kinda of medical problem from them not being clipped...i LOVE them SO much, am i wrong, will this cause them problems???