Yes, I plan to stick around for a long time. I've enjoyed myself in 1.0, but wasn't able to do all the available content due to "lack of free time" combined with lag issues in harder content.

In ARR i'm enjoying myself even more, so i've changed my subscription period from 90 days to 180.

There's so much to do in the game already, for instance:

leveling 8 battle classes, 8 crafting classes an 3 gathering classes.
unlocking classes/jobs and doing their class/job quests
Running (I think) 16 dungeons (hard versions are on the way)
Battling Primals
Exploring
Getting to know the world through (side) story quests
FATEs
Guildleves and Guildhests
Collecting Relic weapons

I'll be busy for a while and then some. (^_^ )