Type of Joints.

The lack of a roach doesn't waste any weed at all. I don't see how not smoking cardboard would make it taste bad, and saving the butt for later makes for a nice treat. Just take off the paper and you've got yourself some resinated bud. Once you've saved up a few butts this makes for a very nice bong session.

^^ Preach on

It always seemed to me all the resin you could have let soak in the last weed of the joint for re-rolling and bong hitting is instead collecting onto the cardboard and being thrown out.
All about personal preference I guess.