This thread is hilarious, so I must take part!
The lexan soup spoon that I use as my sole eating utensil (beside my hands!) weighs 11 grams
A stainless steel tablespoon from my kitchen set weighs in at 53 grams.
That's a difference of 1.5 ounces that I don't need to carry, so I don't. With that said, I have used random kitchen spoons before on backpacking trips and I somehow survived.
Those thin cafeteria soup spoons would probably be a lot lighter than your standard kitchen set, so if you really want a lightweight metal spoon but don't want spend the money on a titanium one, you could always... um... acquire one of those cafeteria style spoons from a local food establishment.