Well u all most likely know the theory of evolution, right? if u dont, here it is. it states that basically the one that adapts the best survives. So in pokemon it is based off of.But i dont think it isnt in a way. Because if u play pokemon or if u dont would u catch Ryhperior one of the best in my opinion here he is 

or the first form which is rhyhorn

of course u would want Rhyperior since it is stonger and that is why there are more of them but there is one more thing. Why would they evolve? It makes no sense. You attract more attention. So there u have it. Pokemon you shouldnt evolve. Also dont argue on evolution! I dont support. I am christian, but i feel like everyone can believe in what they want to. wow from theory to life listen