I've known two people whose parents intended to give them common names but misspelled themnot on purpose- think Micheal and Magen. It makes me kind of sad.
I don't like my uncommon name and would never give it to a child but have never seriously considered changing it, not sure why. I much prefer my sisters' normal names! My kids all got uncommon names too though. We chose ones that are short and easy to spell/pronounce to go with their long German last name. Or so I thought- the last two have been confounding people. I do think that having a more difficult name teaches you early that many people are idiots- I remember first really feeling that when explaining that my mother had a different name than me, then later when people made the same tired joke about my sharing a name with a pop star. No, I'm not her, she's an adult, I'm 8, and you're stupid.