I did roast a couple of pounds last week, but admit throwing away the ends. Normally I'd freeze them for the next time I make whatever stock.
I used to toss the tough stalks but they are delicious in their own right, and the darn stuff is expensive. It's prettier not to mix them with the top parts. And nice not to cut the top parts into smaller pieces.
Canned asparagus is not satisfactory, too much tough stuff.
I thought I'd try roasting some veggies and was thinking what to include. Asparagus would be good. Always peppers. Onions. Then experiment with other stuff Mmmmmmm.