I think u're seeing this in different view.

Me especially really likes explorations, and can't get enuff of it. That's what adventurer does, and big part of RPG games are adventuring. It's really too bad I have already completed all aether gate hunting.
If I had the chance, I would help others that have problems reaching advanced gates personally because I love doing adventuring/spelunking.

Maybe u're thinking of different genre. ;D

As for other achievements, any kinds, I didn't have much complain because like some says: it's a long-term goal. If u can finished all of it real quick, then what's the point?
Not that I didn't have issues with this game, like the crappy drop rate from primals (1 iffy totems in all 3 months). I just have to take this really slow.
And maybe, adding more dungeons content since we only had like 4 (toto, DH, AV, CC) not including the caverns found in each regions.