Would they?
It doesn't bother me because it's a totally harmless and temporary experience, therefore there is no reason to be nervous, but whether or not "most" people would feel different I do not know. I can only go by my own frame of reference.
There's nothing "barbaric" about it. It's totally painless and has no lasting ill-effect, hence why the majority of Trusts view sedation as a needless complication. It's unpleasant, yes, but then what's more "barbaric"? A few minutes of discomfort, or needlessly drugging people?