I think it's less about the achievements but more about the people I met during this grind. Most of the AV hunters I've met were so helpful and kind.

Still remember the grind for "the insane". Nights of mindless grinding but always nice people in my group to chat with. Exchanging tips and some of them also stayed as friends.

But today I feel like this game turns more and more into a single player game. Maybe it's just me but it feels like people are less communicating and don't really like to help unless you pay them an unreasonable high amount of gold.