Rhythm can be learned, shootingstar--honest, it can. You just need a good teacher who likes working with beginners. I used to teach beginning adult ballet and it was a ton of fun.
I am convinced that anyone can learn to dance given a good teacher who likes teaching. I bet uforgot would second this.
"My predominant feeling is one of gratitude. I have loved and been loved;I have been given much and I have given something in return...Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and an adventure." O. Sacks