I think you should definitely do the renewal!!
Did you all live together before you were married? DH moved in about 4 months after we started dating. It wasn't planned or anything...but I got sick and he stayed to help me...then just didn't go back home!

We eventually sold his house and were able to pay for the wedding (and a few other things). But we lived together about 6 months before we were engaged, and about 2 more years after that. So I think alot of the "learning" part we had before we got married.
And you know what is weird? I've had room mates before...girls in college and one friend who was in the process of divorce. And after a couple of months they drove me CRAZY!!! I couldn't wait to have my house back to myself...but I have never felt that way about DH.