What I like about titanium is that it doesn't hold heat, so I can pick up the hot pot without pot holders. Also, after 10 years and lots of mistreatment, my Ti pot is still as good as new. Like expensive down sleeping bags, Ti is a long term investment. And it is several ounces lighter than a comparably-sized good quality aluminum pot.

On the other hand, the feature of not holding the heat makes titanium horrible for actual cooking! If you want to cook, spend the money (and extra weight) for a nice anodized aluminum pan.