The trouble w/ the 737 MAX is not just that it is dangerous but it is inferior in every other way. It's deafeningly loud in the cabin and for people on the ground and even louder in the cockpit. The 737 needs more runway than other airliners that have 4x the passengers: when you read that "airliners can't take off in Arizona because temperatures are too high" it really is "737s can't take off..."
If you rode in one of these
https://en.wikipedia.org/wiki/Embraer_E-Jet_family
you'd learn that "widebody comfort in a regional airliner" isn't just a marketing slogan but something you can experience. The reason why your neck locks up just thinking about riding in a 737 is that the 737 has a human-hostile circular cross section that was the best they could do in 1967 but even a much smaller 2004 airliner feels huge on the inside in comparison... And the E-Jet itself has been superseded by the E2-Jet and A220. In a better world somebody would start a new airline based on the Southwest playbook that entirely uses modern jets and once you tried it you'd have a very hard time ever flying in a 737 or A320 ever again.
People don't realize what a technological backwater domestic aviation has become: instead of upgrading technology they keep making excuses for deficiencies like https://www.alpa.org/resources/aircraft-operations-radar-alt... and https://www.washingtonpost.com/climate-environment/2023/10/1... because there is so much regulatory capture. As it is Boeing probably imagines it is going to be making a starship for NASA in 2070 but to still keep making the 737.