There is no endgame

[DPZ2]

What do you do once you've done all the raids? Stand around in the "lobby" while shirtless catboys prance around?

You already know the answer to your question: "The same things anyone does in an MMORPG after they've gone through all the content at least once."

Some of those things include playing other MMOs whose content you haven't finished and prancing around shirtless.

[Coletergeist]

What do you do once you've done all the raids? Stand around in the "lobby" while shirtless catboys prance around?

Yup. End game is actually (sorry no one told you!) you have to go to Balmung and walk into the Adventurer's Guild and wait for spammed /tells there. Once you get invited to a makeshift night club by one of those afk shirtless cat daddies or cat bois, then you KNOW for a fact, you've finally made it.....finally made it to true end game.

[Kewitt]

You have 1 job at 80, No gathering No crafting.
Maybe try a different job to challenge yourself.

There is a crafting End Game.
There is also challenges like doing Raid content at min Ilevel
complete the whole Challange log in a week.

Give yourself something to work on... if you don't want to do any of these things. Feel free to take a break and come back when next patch is out.

[Seddrinth]

What do you do once you've done all the raids? Stand around in the "lobby" while shirtless catboys prance around?

You can level alts or help newer people get their clears.

[MPK]

I mean OP isn't wrong

[Arngrim_Greyashe]

I mean OP isn't wrong

Imposter #2 has entered the arena.

[EverQuest]

This person has not completed the ultimates. Signed your boy end game

[Halivel]

Remind us, please, when does your subscription run out.

[MPK]

This person has not completed the ultimates. Signed your boy end game

But I have and I agree 100% that end game is very lacking

[KayRadley]

For Twelve's sake, just quit already.