I like Occam's Razor too. But what if you see little invisible beings grabbing the apple off the tree. Most people can't see them but some can. So those of us who can of course want to bring it to the attention of people who can't see them but we can't make them see what we see, they would have to take our word for it or get new eyeballs or something. Imagine how frustrating it would be if you were one of the ones who could see but could not convince anyone else that you could see them. Plus you start telling people you see invisible beings pulling apples off the trees and they send you to the loony bin, so you stop telling people you can see them and just wink at them while they pull off the apples. meanwhile everyone is going on about gravity and you and the beings share a knowing smile...
I like Occam's Razor but the greatest discoveries are probably made by people unwilling to accept the simplest explanation.