It seems to me that the terrorist attacks are becoming far more 'professional' and it's due to proper training and organisation by ISIS in their homeland, even if they are largely carried out by homegrown terrorists, so logically it will make us safer if we take them out in Syria. You won't be able to stop an individual terrorist all the time, but the Paris attacks with so many different people involved in different places with precision timing and impact makes the likely death toll much higher. We have foiled seven attempts this year, the idea that they will ignore us because we aren't bombing them is ridiculous, especially as we are bombing them in Iraq anyway. Our missiles are supposed to be the most accurate in the world, as well as our surveillance equipment, we need to add our expertise to the fight to get the best results. We also need UN troops on the ground IMO and it will just be a matter of time.