Because the fact is that Hizbollah, hamas, etc., have declared war on Israel, not Israel to Hizbollah, hamas, etc. You are right, though, that war is evil. So why don?t you try and convince Hizbollah, etc. of it?
Magnitude 6.1 quake hits Panama-Colombia border (Reuters)
from the article: Analysis: French Lebanon talks are kowtowing to Hezbollah