I've always loved the Elves in Tolkien's books, and I actually would really like to be one myself.
Not really because of the immortality or whatever, but because I like their light and fair style.
They leave no footprints, they are plain fair and beautiful, and everyhing about them is adorable.
If I were able to choose, I would become an Elf, no doubt.
However, since I am a human, I can only try being as Elvish as possible, i.e. I shave a lot, so as to look smooth, grow hair a lot and stuff.