I don't have a middle name. Only half of the people here have middle names (most of those don't use it at all, a few only in their full names, and I've yet to see anyone who is actually called on their middle name). I'm still sad I don't have one despite of this. I once asked my parents why they didn't give me one (nor to my brother), having invented complicated conspiracy theories before about what they were hiding, but they said they were just too busy at that time and inventing one good name was hard enough. On the other hand, they at least told what my middle name would have been if they had thought of it at that time (the name of my great-grandfather, quite logically).