We'll tell you what—having crappy joint health and lubrication is going to suck when you're trying to get anything done physically, let alone train at the highest of levels. Get Animal Flex in your program...for real. This will keep you moving and performing how you should. Facts.
There are ways to make gains and continue to progress in bodybuilding as you age. Albeit, you may need to make adjustments and work around ailments due to age but you can still do it. How? John Jewett throws some pointers here.
Each time you train, you have to raise the bar just a little bit more than last time to progress. Intensity must be high, blood flow maximized, and focus sharp. Why not supplement with something that will dial up all those factors?