People seem to like peonies, and I guess I kind of understand -- the flowers are very big and showy -- but I'm not much of a fan personally. Our neighbor had one when I was growing up, and I found it kind of unnerving as a child to see ants crawling all over the unopened buds all the time. (According to the Heartland Peony Society, the ants are neither good nor bad, just attracted to small amounts of nectar produced by the flowers, which may or may not enlist the ants' help in opening the tight and petal-dense buds. When the buds are finished, the ants find new food sources.)
Still, though, there are worse things than ants. And the flowers are pretty.