Why do people love god...?

You're saying there are people who are without sin? I thought everyone was a sinner and so long as they repent they can be forgiven. Different denominations have different views of what repentence means, and almost every denomination thinks their interpretation of the bible is the only correct interpretation. There are a few churches though that are trying to reconcile the rifts called eenical which break from this general rule and are more tolerant and open minded of the views of other christians and even other religions.