Texsport also makes a 1.5qt aluminum pot. Note that the lid is very heavy, but a grease pot lid works. I simply remove the handle (substituting a piece of the handle and a smaller alum screw) and cut off the flange leaving a thicker disk for a lid. The pot, bail (aluminum) and lid comes up to about 5.875 oz. I use a K-Mart grease pot for solo work at about 3.75oz. I think they still sell their set for $17, though most parts, except the pot, are pretty worthless.
Aluminum is not toxic. It is found in all sorts of stuff and common alloys of Titanium actually have aluminum in them. You really don't get away from it. Acidic foods like spighetti sauce will cut into aluminum leaving a LOT in your food, however.
As others have said, the big advantakge is ti doesn't dent as easily. It is also more brittle. I cracked a ti pot one time unbending it. Aluminum generally takes a few dents amd bends with little effect.
At the thinness we are talking, nothing makes a good cooking pan. Aluminum is slightly better than ti, but it really doesn't effect heat transfer that much.
For boiling water, making soups/stews, breads, etc at camp, I prefer aluminum because it is just lighter. Thanks, Michael!