I think the set on the pickup are 3 years old or so, same with the Equinox. I replaced wipers when I bought them and haven't replaced them since. The 442's blades are at least 10 years old (it never sees inclement weather) and the T's wiper is at least 20 years old (also never sees inclement weather).
The pickup and Equinox always park in the garage when at home or at the condo, rarely see rain and have never seen snow.