While I felt good about knowing there would be a post credits scene at the end of X-Men: Days of Future Past, they make me, in a strange way, nervous. My two movie companions both turned to me at the end of the film and asked whether there would be anything else. I told them we should wait, and luckily a short scene did indeed appear to set up X-Men: Apocalypse, but imagine if I was wrong (though that doesn’t happen often).
As it is know common knowledge that Marvel films will have a mid credits or post credits scene, imagine sitting there while watching say Iron Man 4 (it’s bound to happen) and you wait through the whole credits for nothing. What a kick in the guts that would be. Maybe they could put them no more than 30 seconds after the credits start, but then more people would see it and it would be less special. So after all Hollywood, don’t listen to me.