I mean "life changing" feels a bit dramatic for just not having to wait to pee. Like yeah, I get that holding it for 8 years probably sucked (been there, done that, got the damp shorts). But is it really that serious where you're rethinking your whole life? I've done plenty of long dives without a p-valve and I just drink less before or take a quick break. Seems like a lot of hype for something that literally just lets you pee in your suit.