Events in Syria are horrendous. Looks like about 4 wars raging simultaneously in different parts of the country.
And there's little way of seeing it ending with a lasting peace.
Once the fighting has ended, even then, we'll maybe never know if the uprising was worth it.
If we trusted our governments in the west, we might say they'd done a good job of almost toppling Assad, but still really weakening his regime and armed forces, of drawing Russia away from eastern Europe, of distracting Iran, of letting other people fight IS for us, of polarising various Arab nations, etc. etc. etc.
Will it be worth it?