46 and I find working on the Benzs fun. Been working on cars for over 30 years and have hated a lot of it. I don't like working on our Lincoln and hate working on my sons Bimmer, but for some reason fixing the MBs doesn't feel like a chore. I think it is because they are mechanically simple and everything is easy to get at. I have not had to do anything heater or AC related in the dash yet, maybe that will change my mind.

Jerry