The technical name is cetacean, and they did:
http://www.ucmp.berkeley.edu/mammal/cetacea/cetacean.html
evolution is not a theory that gives a meaning to life. It is simply a scientific theory that describes how things are, not whether those things are good or bad. However Evolution can answer why certain societies exist. This was demonstrated by the likes of Maynard Smith using game theory to demonstrate how altruism can be beneficial to ones genes.
you are confusing things here. Evolution has nothing to say on this matter. Humans are not a single replicator species, we no longer rely only on genes as many other animals do. so the questions as above are irrelevant to evolution.
It is. for example antibiotic resistance in bactreia, vancomycin reistance in bacteria, nylon consumption abilities in bacteria. The evolution of many animals in and around cities, and rather amusingly an experiment observing extinction in lizards went badly wrong and turned into an experiment on rapid evolution.
only there is.
well no, but that is because there is no process to do so.
aah yes, you are missing out all of the evolution in the middle, and we were never monkeys, we were (and still are) primates, and monkeys are a branch from our common ancestor with them. Just as an example of many intermediates, here are a number of homonid skulls, ranging from small braincases like chimps, to humans:
http://www.talkorigins.org/faqs/homs/compare.html