Both kill innocent people. Many people believe that killing an innocent person requires the death penalty for the killer. Why revile the person who pays for his act with his own death while honoring the one who kills and lives to kill again?
The suicide bomber becomes the drone. Is that what makes it "different"? What if the suicide bombers used remote control toy cars to deliver death for them? Would that make the American "patriots" feel better? And if not, why not? I really see no difference. The facts boil down to people using explosives to kill other people for political reasons. That isn't something I can get behind.