Why am I so antisocial?

A family has moved into the apartment next door. They first arrived on Thursday, and today (Saturday) I hear them going in and out. I should go introduce myself, but I just don't want to. It's not like I'm scared or anything, and I really do like knowing my neighbors (the only other ones I even know the names of were the previous tenants) but here I sit. When I happen to be going outside sometime, I'll say hi.

Edit: I said hi just now as I took out the trash. Nice people, cute daughter. See, not so hard. Bleh.