I did at first, so I went into the Options menu and switched the view to Always Centred. Works like a dream when you're out on the street - but a COMPLETE NIGHTMARE for cave maps! Feels like falling down a hidden trapdoor every time you go down a tunnel :^/ In the end I just switched it back to Free Look and eventually just got used to it.
Oh yeah - little tip from one who tried, just for the heck of it; The Invert Mouse option is really, truly NOT your friend in Cave Maps! If you think the motion sickness is bad in normal mode... man, it was like being VERY drunk. On board a ship. In a typhoon.