Quite an astute perspective to have. Also rare. One might say almost an impossible one to have.
I'd like to say scholarly, but, alas! I'm no scholar.

"...all the problems" ...wow. Hmm...kind of taking far too much credit here, I'm thinking. Play a part in creating the structural outlay, sure, but to state it as an all-encompassing idea works against your "all sides" philosophy.
OK - we're not entirely responsible. I have no trouble conceding that point.

Torture exists because there are people who are not only willing to think it up and inflict it, but feel an inner need to do so. They can provide whatever "justifications" they deem suitable, but it's the same as Bush arguing that he can "be victorious" in war- none of the reasoning makes any sense. Really, it boils down to the fact that the tormentor wants to torture. It just isn't possible to outlaw innate bloodlust and because there will always be people who desire to act in barbarous ways, no government anywhere will ever be able to provide legislation to rid us of that evil.
No argument from me about that.

We should all probably spend more time pondering just that.
Doesn't this thread form part of that contemplation?