Bashar al-Assad is a tyrant who kidnaps, abuses and massacres his own people so it's understandable that many Syrians want him gone.
They went about it the wrong way, or it started out well and then turned bad as the Islamist Head-choppers became prominent.
And what about the Kurds? They've fought bravely to gain some kind of independence. It would be an absolute travesty if they were to lose that - either to al-Assad or to the Turkey-backed Islamist groups. Either way it would be terrible for them.