They are absolutely worth the two days of hearing loss I suffered after seeing them like 15 years ago.
(seriously tho, bring ear plugs! It's not just the band, but the band having to be turned up to even be heard over the ENTIRE audience singing along)
Sadly, I've never gotten the opportunity to see them live.
I've seen probably close to 300 bands live though. Including Metallica, Rage Against The Machine, God Smack, Motorhead etc etc etc The loudest live band I've ever seen, is a 2 piece called Black Pistol Fire.
My son and I went to this 3 day live music festival in 2019. It was a strange mix of music. Friday night was a folksy blues night. Not my type of music per se, but it was cool. Saturday was a rock/hard rock night. Sunday was a pop/Hip hop/rap night. The last 3 bands to play were Smash Mouth, Sublime with Rome and Snoop D-o-double-G
Anyway on the Saturday night the headliner was Incubus, but the band that opened for them was Black Pistol Fire. My son and I had Pitt passes, so we were right up to the stage. We were trying to communicate at one point during their set, and we were literally Shoulder to shoulder yelling at each other and could not hear each other. It was an insane level of volume. My ears were ringing for 5 days after that weekend.
If you ever get the chance to see those guys, I highly recommend it.