If you aren't "social" in the first place - G+ wont be any different (even worse, no Bejeweled Blitz). The only positive I can see is that this one is less intrusive, and is "part" of the everyday services you use with GMail, YouTube, etc. so it's not much of an eyesore.
You log into GMail, you sign onto your Google Reader, iGoogle, and there's the top bar with notifications that people replied to your stuff, added you, etc.