Is a titanium camping mug worth the extra cost?

For backpackers counting ounces, yes. Specialist subreddits like r/Ultralight repeatedly point to titanium mugs as the go-to because they weigh roughly 2–4 oz, can sit directly over a flame, and don't impart a metallic taste. For car campers who don't need to boil water in the cup itself, a cheaper stainless or BPA-free plastic mug usually delivers more comfort per dollar.