I just don't get how people are content to consume this stuff
This may be pedantic or overly literal but: do some folks not understand that the same food substance may taste wildly different to different people?
I'm with you, by the way. Alternative sweeteners taste like absolute poison to me. Like I've accidentally sipped some industrial cleaning chemicals or something.
But I'm also one of those people that likes cilantro. To some people, it is incredibly nasty and it "tastes like soap." My impression is that some people think us cilantro-enjoyers actually enjoy the soapy taste as opposed to simply not experiencing the soapy taste at all.
The difference in experience is not because I enjoy the taste of soap. Cilantro just simply does not taste like soap to me! Based on all available anecdotal evidence that is why some people enjoy the taste of artificial sweeteners: it actually does taste like sugar (or close enough) to them and not like they are chugging cleaning fluids.
(edit: softened wording, clarified)