It is understandable why Clark would feel that way. After all, he had dreamed of meeting someone from Krypton all his life and then to discover they were not as high-minded as Jor-El was deeply disappointing. On top of that, they want to destroy the inhabitants of Earth and make it New Krypton. The damage they must have inflected on the people of Smallville and Earth was difficult for him to see.
Thankfully he has Lois to save him emotionally and mentally. Well done!
