In the Marvel Universe, Redemption Is a Dirty Word for Villains
They say a leopard can’t change his spots; in the Marvel Universe, you can sure as hell try, but the world will either drown you in a bucket or super-glue those spots right back onto your skin. And I’m not just talking about Kraven the Hunter who, thanks to Squirrel Girl, realized the error of his ways but ended up six feet under for no good reason at all.
Sure, the DC Universe has plenty of recurring villains, so much so that there’s a plot device, the Lazarus Pit, specifically designed to return dying characters to rude health. The problem with the Marvel Universe is that any villain who gets so much as a sniff of redemption is forced back into their role, doomed to multiple lifetimes of torment where death is nothing more than a temporary release.