As was stated in today's homily, many people buy into the "prosperity gospel" even today. They believe that God clearly loves those who are successful more than those who are less fortunate. However, Jesus clearly states the opposite. Paul drives the point further by saying that the test is whether the powerful use their strength to help the weak or whether the wise help the foolish.
Some have used the Beatitudes as way to tell people that they should be happy with their lots in life because they will be rewarded in heaven. They forget that Jesus said that His kingdom was established "now and forever"--not in some distant future. He was telling us about the importance of treating one another better, even saying that in helping those less fortunate that we are helping Him directly.