My main reason for wanting a tiller is singlehanding. A tiller would put both the mainsheet and primary winches much closer at hand.
Being able to enjoy the protection of the dodger and steer would also be a huge plus.
Those are the two main reasons but I really just like the feel of a tiller. Went sailing last weekend on a friends Alberg 35 and remembered how much I like tillers.
PSC 31 Journey