Don't want one, either.
Every one I'd really want to be there lives too far away, with the exception of two people. I think it'd make for a really miserable and awkward time of forced socializing with people I'm not close to or friends with.
Aside from that, I dislike being the center of attention, and I'm not expecting people to give me gifts (for me, my registry is more of a shopping list for myself). I'm super happy when someone does send something... but I feel like a shower forces it and I don't want that.