I want your opinions as to why you, or in general, backpackers use a torso length sleeping pad besides the weight savings? Do you use your pack for your lower half? Do you just say forget about cushion for your legs?

What are the pros/cons in your mind for using or not using a torso length pad? I'm weighing the options for a future pad purchase. Any info is greatly appreciated. I'm 6'5'' and a tossing slide sleeper with sharp hip and shoulder bones.