Putin can have syria, we should pay them for the privledge to get out. Syria is chock full of terrorists and competing factions that hate each other, kill each other, the entire country needs rebuilding, zero reason for us to stay.
We went there because ISIS was running wild, conquering vast stretches and possibly the whole country, we didn't go there because there were bad guys there. There will always be bad guys there. ISIS is done, crushed, defeated, the Kurds and more importantly the syrian army can clean up the last few rats.
When we leave and we read about bombings and suicide bombings in various towns, we can thank our lucky stars that those aren't americans being killed.