What is your problem? We have publications that report news like casualties of war, politics, economics, etc. You are talking about entertainment magazines mostly. What "should" be on those stupid things is exactly that, entertainment. Get it? Simple math.
I do not understand why you care so much about how other people live, or if they need to get their own life, etc. I am sure your life will go on just fine whether or not other people change. No one "needs" to do anything that you mentioned. Grow up. Just because people do not live like you do, does not mean it is a bad thing.