I think there's a special place in hell for people with no clutch control! I remember the daily ritual of the woman who lived opposite many years ago where she would put her poor car through a series of loud grinding noises, revving the engine like mad to get it eventually crawling off the drive at which point it would roll backwards across the road until it bumped into the kerb. In the couple of years I lived there she never got any better.
In my case I think I'm just too impatient and change gear too quick. And, y'know, teeth and things eventually break off. Then again you get some gearboxes that are just horrible. I had a Calibra turbo (yeah I know, showing my age) for a brief while and its six-speed gearbox was cool in theory but if you could get the bugger into gear. Turns out it wasn't just me and my "ways" but a common complaint.
