I swore off smoke stacks years ago, but decided this one was an exception to my rule. The top couple of rungs were a bit sketch, but It wasn't too bad.
I understand the attraction! Those cracks were very dicy looking. I'm glad you were okay. Someone wrote a harrowing story of bricks coming apart while climbing, and ending up stuck ABOVE the unstable part.
I've been up this chimney twice. Thankfully bricks are in better condition to the one you climbed. This video is the second climb. I only did it because the first time my GoPro had one of its irritating meltdowns. I won't climb it again. It's all about the balance of risk and reward, imo. I would have enjoyed more time panning around at the top in your movie - seeing as you've gone to all the effort to climb it, and you might be the last person who takes the risk to do so, by the look of those cracks. Looking forward to checking out your other videos!