I definitely AGREE with Luna... the drivetrains of today are much more user friendly BUt you definitely wear them out fairly quick. There are lots of other drivetrain companies out there, and in reality, they are all pretty good! Campy, FSA, Truvativ, Sram, etc... if they weren't then they still wouldn't be around because there is LOTS of competition. I would NOT hesitate to replace the chain, chain rings generally last at least a couple of seasons.(depends on the brand and quality) IF you want to check this yourself, then either buy the Park tool to measure chains or measure out 12'' of your chain with a ruler, measure from the center of the pin to center of another pin. If the ruler does nOT hit exactly in the center of the pin, then it's time to replace your chain.

Good luck with all of this!

Good Luck!