One thing about human beings: we will always find ways to imagine a world far removed from our own, purely for the sake of our own entertainment. Our own lives are frequently boring, filled with things like obligations, dentist appointments, and jobs. It's no wonder that we would rather let our imaginations wander to magical lands, or alternate universes.
The fictional characters in these places still have a heck of a lot of problems, usually a lot more high stakes than our own. That, of course, is part of the reason the genres of sci fi and fantasy are so great. The level of escapism is unrivalled, and the amount of detail involved only makes it stronger. It's little wonder that they provide ample inspiration for memes at all levels. From elves to Vulcans, the humorous potential is almost as active as the escapist one. Here are a few examples to prove it.