For real. The more you look at titanium, the less sense it makes for any part of a bicycle. There are a couple of places where you can use Ti directly to replace steel because you can't reasonably change the dimensions but the steel part is much stronger and/or stiffer than it needs to be, but if you have a free hand then all the really good things about Ti don't really apply to bicycles, unless you routinely wash your bicycle with hot concentrated acid.
Good thing riding a bike isent done in theory.