People in general hate to see things change, especially when it has been around for years, like Pokemon. It's a way of preserving memories. It's why people get really upset when any older movie gets a revamp, or game. We don't like seeing things from our childhoods change, but some are more subtle about it than others.
It's a natural thing.... But not natural to declare anything that's relatively new as crass and stupid. Now THAT is childish.
Everyone draws the line somewhere different with your first question, btw. Some don't like ANYTHING to be different, while others like to see the creators play around with mechanics.
Black 2 Friend Code [Nikl]: 0433-7110-2756 Official Swoobat of the Pokemon X board