It's not just about safety, it's about the flying experience and environmental responsibility.
If you think "flying sucks" it's probably because you've flown in a 737 and similar (A320) aircraft.
Many people find it highly stressful to fly in a 737-class airplane because the curve of the fuselage is circular. My neck starts to lock up just thinking about it, but you don't have the same problem riding in a car, bus, or train because those vehicles have straight sides. Modern aircraft like the A220 and E2-Jet have a shape compatible with the human body such that today's "regional jets" feel more like riding in a widebody airliner than a 737. It's the kind of thing that's hard to believe until you experience it for yourself.
The 737 is exceptionally loud, particularly for the flight crew, but also for the passengers and innocent people on the ground. If you think flying sucks it could be because you remember walking out of a 737 with your ears ringing -- and nobody told you it doesn't have to be that way.
The A320 has a reliable fly-by-wire system with numerous benefits, not least the plane being able to automatically cancel out some turbulence, another small thing that leaves you feeling better when you reach your destination.
The 737 struggles to take off under good conditions, requiring much more runway than many much larger planes. Next summer you'll see headlines that "airplanes" are grounded at some airports in the US Southwest, you should replace "airplanes" with "737s".
Airplane manufacturers have wasted enough resources on widebody airliners that nobody wants
https://en.wikipedia.org/wiki/Airbus_A380
and the industry needs to get real to the fact that narrowbody airliners are responsible for most of the flights and most of the social and environmental impact of aviation: domestic flyers in the U.S. deserve something better than a 1967 design.