The correct analogy to use on this regarding airplanes isn't if you'd get in an experimental aircraft. Those are quite safe.

I would like it to jumping out of a perfectly good aircraft with a parachute you didn't pack yourself. You're trusting someone else with your life at that point, hoping that when you pull that rip cord it'll deploy clean and unfurl properly. And once it does open, you look up and notice it's just a drogue chute. Just enough to keep you from falling to your death, but not enough to land without possible life altering injuries, or death. But by that time, it's too late, so you hope and pray you survive, even if you can't use parts of your body any longer.

That's what taking these vaccines is like. You let someone else prepare it for you, tell you it's certified for use, then hope and pray you don't end up with some life altering mishap as a result of your misinformed "guess" based on someone else's word.