I took the old school Greyhound bus once in... 1988ish. My grandparents put my 14ish yr old brother and me on the bus for a several hour ride back home across KS in Aug. I was 6ish. It was so hot and I can still taste the cigarettes smoke and the diesel exhaust. I had a blast but it was disgusting.
Air travel is fine. There are just more opportunities to forego creature comforts in exchange for a lower fare, which is why most people don’t travel long distances by bus anymore.