Opening Day Over Reactions

I don't really understand the practice of like opening day over reactions. We've all recognized that we are prone to overreactions early in the season. And yet it still usually is an overreaction. I am quite confident that the Colorado Rockies will finish in last place. Yeah, I think they're pretty bad. But could the Tigers be better than the Royals? Yes, but I would say probably the odds are that the Royals will not finish in last places.