It's kind of funny that before the announcement of dragon bone weapons being added with Dawnguard, most people nagged it wasn't right there were no such weapons. Now that the devs implement it, a lot of people nag it's not logical to make weapons out of that material. Minds are so fickle.
and making weapons out of glass makes sense?
or wood for that matter... (ebony)
Ebony isn't wood in the TES lore, it's volcano rock from Red Mountain. Not like it makes more sense making weapons or armor from volcano rock (way too hard), but eh.