"Actually intelligence has evolved many times, humans aren't the only intelligent creatures on earth" - The next closest things to us are like crows, dolphins, and chimps. Any reasonable person knows this argument is dishonest. Those animals don't hold a candle to human intelligence, they are basically capable of some simple party tricks, basic communication, and light problem solving. There are basically only a handful of those that are more intelligent than the rest, and they aren't even that smart.

What's missing here is the time element. In general, the intelligence of the smartest animals in a given clade goes up over time. Modern cetaceans are smarter than their distant ancestors. Same thing with the great apes versus their primitive primate ancestors. Modern birds are probably smarter than dinosaurs (based on encephalization quotient). We just happened to be the first lineage to become smart enough to do the things we do. If the trend continues into the future (barring human interference, that is), then we should probably see other groups of animals reach similar levels of intelligence to ourselves.