Think harder. Dismissing the entire game as things you don't care about of course would result in nothing to do. There may be "Many" people that don't care about anything, but there are "many" that do.
1. Daily roulette for tomes - which I do care about. Like I wrote earlier - finishing these sets and upgrading them is the best gear I have access to without a static.
2. Daily PVP roulette.
3. Daily Alliance if you are levelling old classes, as I still am.
4. Daily level roulette if you aren't done levelling.
5. Weekly Alliance Raid for a coin.
6. Weekly 8 Man for 1/4 items to get a 720 weapon.
7. Daily Society quests.
8. Weekly custom delivery quests.
9. Weekly setup and collection of Island Sanctuary to keep that going.
10. Daily crafting FC deliveries if you still need experience. I check them and will do an easy one if I need the XP.
11. Collecting money from your retainer and sending them back out.
12. Weekly loose ends for Khloe stories.
13. Weekly fashion report.
People even do other things like other daily and weekly gold saucer that I don't even bother with.
Some of these are fast, but all these little chores quickly add up to a lot of time.
A lot of these grinds do have an end point - but if you reached them you likely already got an immense amount of playtime out of the game.