Turkey resembles a failed state, fast approaching the Ukropian example. Russia can do better than that. My gut feeling is that Russia is exploiting Erdogan for their own gain, they're not in too deep. They know what they're dealing with and use Turkey in order to help the situation in Syria.
What are you talking about?
Turkey is no where near a failed state, and nothing like the fuck up that the Ukraine is.
Of course Russia can find other friends but there is a clear mutual benefit in this situation for both Russia and for Turkey.
Cooperation will help both countries and solve some very real problems for both countries and the countries in the region.
Cooperation with China or Fiji wont effect the situation in Syria or Turkey, the only solution is dialog and cooperation between Turkey, Syria, Russia, Iran and also Iraq and anyone else who could be useful.
Russia could be stupid and turn its back on Turkey for a million different silly reasons and Turkey could do the same but that solves nothing.
Talking and cooperating lets them work through problems with real solutions.
Unlike the US Russia has little real relationships with the PKK so there is no real barrier for cooperating between Turkey and Russia. Considering Turkey controls the straights that lead out of the Black Sea it makes sense to try to achieve good relations anyway even if there was no situation in Syria.
By cooperating Turkey can have a say and some input as to the solutions Russia and Syria try to implement in their attempts to deal with ISIS and the so called opposition.
Being stubborn gives them nothing and no seat at the table.
Together Syria and Turkey and Russia can get a solution that Syria and Russia probably could not get on their own...