The American medical system acts like the smallest bit of discomfort warrants being knocked out.
There is a tremendous variation in both pain tolerance and anxiety. You sound like you’re in the minority.
The anesthetist still gets paid. His concern is if you freak out (this happens more often then you may think), he may at minimum have paperwork to do and worse you may sue him for malpractice (“well he didn’t clearly explain it would be that bad during the consent process).. again this problem happens more than you may think. Ie the negative ev for them if you do not do the typical protocol is considerable.