Hooray!

I am not trying to cause anything so pleast take what I say with an open mind.

Why do they PTS horses with broken limbs? I understand the strain of the weight on the fragile limb but is it because it is difficult to repair? I don't understand about the will to live thing. I thought, generally, everything had a will to live. Have they tried to save horses with similar injuries before and they (the horse) just gives up and dies?