You're suggesting people undergo endoscopy without anesthesia? You go first, bud.
https://www.northerncarealliance.nhs.uk/patient-information/...
Surgery uses propofol plus a gas anesthesia for "general anesthesia", but it is considered "general anesthesia" even if only propofol is used.
My only experience with global anesthesia was as a child waking up with a massive asthma attack unable to breathe so I try to avoid it.
Probably not as horrifying as brain surgery or getting your eyes lasered.