Nothing is OK adam but chem weapons are viewed as war crimes by the Worlds leaders in general. There is no good way to die but that way is a horrid way. You found that didn't bother you at all after seeing the video? Small children gasping for air with their eyes rolling back in their heads wasn't distasteful? Jesus.
I don't think it is worse than entombing families alive in the stone rubble of their apartment buildings, no. Or torturing anyone accused by a neighbor of rebellious thoughts for years on end.
Here's a good read on why I don't see recent events as escalation, rather more of the same:
https://theringer.com/syria-barack-obama-legacy-853644abdd1b