Hi Arkady,
Initially I thought perhaps u were concerned over bleeding alot during the proceedure of having a wisdom tooth out, as that is a risk.. but if it is only because u are worried about altering your body or removing something then I might see it this way... if you got a gangreen(sorry for rubbisg spelling) infested finger, arm, foot stc surely u would allow it to be removed? I realise a wisdom tooth may not be as serious in comparison... but if dentistS are telling u its the only thing to do, then I would go with it. lots of luck.