If the question is 'should we bomb Syria?' then the answer surely is no.
if the question is 'should we accurately target locations in Syria, which we are confident are being used by terrorists, and cause as little collateral damage as possible?', then yes.
I guess on here, the latter question is the one being asked, but the politicians seem to be discussing the former.
taking out their supply lines, communications, funding, fuel convoys and internet access would be the best start.