You aren’t as young as you used to be...concerts these days are just too dang loud. Luckily, Eargasm makes special earplugs that attenuate sound evenly, preserving the fidelity of the music you’re hearing while reducing its volume. They even come in an aluminum case that you can keep on your keychain.
Normally about $32-$38, they’re marked down to just $25 per pair today, or $12 if you want a version designed to help your ears deal with changing pressures on airplanes.