WHY DO THEY DO THIS

Okay, SO, WHY, WHY DOES THE DENISTS ASK YOU STUFF WHEN THEY ARE DIGING AROUND IN YOUR MOUTH!? LIKE, REALLY! ITS DUM, LIKE STOP, YOU CAN TALK TO ME LATER NOT WHILE YOUR PUTTING THINGS IN MY MOUTH LIKE DUDE STOP! AM I THE ONLY ONE WHO THINKS THIS!?
for example: n one day i was getting my tooth removed ad they were asking me stuff like why!? Im getting my pulled out and your telling me not to talk but your asking me stuff like what the heck!. 0`_`0
(also if i made and spelling errors dont tell me i know you know what i mean thanks)