Several of my Fluke meters have been around for 10+ years. Other than replacing leads when they wear out, all 3 meters come back from the Calibration lab every 18 months with no issues! Keep them clean and dry, get them calibrated and your good to go!
The same issue is rampant around here. 100K$+ Tesla's in the weather, while a pile of junk occupies the 3 car garage.
Every bay of our garage holds at LEAST 1 car, sometimes more than one! Haha.