I do not want to share my files
 

What I do with mine is keep the ones I want to share in a shared folder and my sensitive ones in a folder that isn't shared (noone can see those of course). If you later decided to share them you could move particular ones to a shared foldier, or, to share all in that folder, just change the folder itself to shared.

I couldn't really believe anyone could have stuff like that in a shared folder but I suppose you could forget it was there couldn't you? I've only got music in my shared folder and I'll make sure I keep it that way.

I do not want to share my files
 

We have to get information somewhere, we aren't born with it; even those know-it-alls who read these posts looking for someone to jump on. They just clutter up the forum.