It's definitely a bump-worthy thread. I must have missed it in 2009, although I was on the boards.
I loved Robin's story of crying after her DH picked her up. Last week, I picked up my DH and took a few steps with him on my back. I can't say that it was comfortable, or particularly romantic when I dropped him. (Sorry, hon!) The Boy saw this (age 8, 52-ish pounds), and wanted a bouncy piggy-back ride where the "horse" stops every few feet and jumps up and down in place. And another. And another. And another. I'm so thankful, and happy, and proud, that I can play with him this way.