Because it's easier to type and remember. I don't think having people type lds.org instead of CJCLDS.org has anything to do with how they feel about Jesus.
Go to lds.org and the first thing listed there is "The Church of JESUS CHRIST of Latter-day Saints". In fact, right now the main item on the page is a video called "Jesus Is Baptized by John". I don't know how often that changes.
Guess you forgot about the fact that Jesus Christ was left out for the first 8 years - or perhaps the mormon god was too busy to reveal it to smith.