D1 worked with a young woman whose father was very known in finance. As busy as he was,he always took her calls and tried to do father/daughter things with her. One time he flew to NYC from London to go to a concert with her then flew out to HKG after the concert. It would have been easier for him to just buy the tickets for all of her friends, treated them to a nice night out, but instead he gave his time. He wanted to share the moment with his daughter, and the only way for him to do that was to do it via private jet. I imagine for some of those very wealthy parents, time is probably more valuable for them. They want to visit schools with their kid, but had to do it as efficiently as possible. I actually applaud some of those parents for making the effort. Truth be told, once they arrive at a school, no one knows whether they got there via private jet or Subaru.