If the world is pretty enough, there will be ppl who <3 it and explore it.
The "reason" wasn't the problem, it's the people. even someone provided the "reasons", the people won't do; they won't do.

I always see people complain about "the game didn't give us enough reason to explore"
"the game didn't give us enough change to socialize with other people"
"The game is boring and nothing to do."
You don't need reasons to explore beautiful world that's because you think it's not beautiful enough.

I always spend time go around each corner and chill there (& chat with my LS people).
If I saw ppl will the green sprout, I'll just go hug them and run away. (sometimes, I received friend request afterward)
I /em feeds <t>. Roegadyns who is nearby. (sometimes, I received friend request afterward from the Roes I repeatedly fed.)
I'll pick someone from my friend list and go "stalk" them. see what are they doing in game. give a ninja hug then run away.