We use our 13 year old BabyQ at least three times a week.  It was a 10 year employment anniversary gift from work.  At first, it was just used for travel, but, was put into full time service when our big box grill at the time rusted through.  I give it a light cleaning twice a year, and do a complete teardown every two years.  Nothing has had to be replaced on it, yet, although the cast iron grate is starting to show it's age, as is the folding cart.  It sits on our patio, uncovered, year round.  I was looking for a cheap used second Q, when I found the old Genesis I started working on today.  The Genesis is going to become the patio grill, and the BabyQ will be deep cleaned, and put back into travel service.