God's name: Yahweh, Jehovah, JHVH?

It is important to use Gods personal name, Jehovah. Just as you would use anyone's name who was your personal friends. You are right, many Bible translations have chosen to take the name of God out of it. Man, under the influence of Satan have done many things throughout history to keep people from knowing the true God, including taking His name out of the Bible in many translations. I like your question, it shows that you are a thinking person. :)