Sometimes it is beyond reason. I have seen student s and even supposedly mature adults having the responsibility of taking care of their family, not thinking twice before shelling out hard earned money on a ticket to see their favorite stars performing. There are all sorts of crazy people out there and the media makes much of them and their adoration , the concerned celebrity is on cloud nine ... honestly don't they have better things to do with their life ?
https://en.m.wikipedia.org/wiki/Celebrity_worship_syndrome
...goes to show how easily masses are led and willing to be lead. This kind of fan worship also goes to show in my opinion a very weak and immature mind that prefers to blindly follow rather than be analytical and use one's own common sense.