I have a big problem with internal validation. This makes most singleplayer experiences pretty meaningless to me. Antidepressants help, but only to an extent.
As a kid/teen, I only wanted to do online pvp. As I’ve gotten a bit older, I’ve found a lot not enjoyment out of coop. There’s still some competition, like dps charts in a raid, but it’s mostly the feeling of overcoming a challenge as a team that I look for now.
And as others have said, online coop is king. Love me some asymmetrical puzzle games.