but there are not the same environmental factors everywhere, so we had many kinds of insects evolve, and we had many kinds of life evolve in one area. insects are cool in that they can move, and adapt to the new environment they move into. perhapse you have heard the term exotic species bandied about of late?<quoted text>
Besides, if everything "evolved" to it's environment, everything would basically be the same....
example: all insects would be pretty much be Identical under the same environmental factors...but it's clearly not the case.