Wrong example: [1] - "Their years of experience means that they know how to look for and address issues with cars in such a way to keep the car running for years. If you want to reduce future maintenance, a knowledgeable mechanic is the smart choice"
Or, more properly, I want the most experienced professional (for anything) that I can find and afford. Age is a rough proxy for that, but it isn't ironclad.
I'd prefer the 60 year old who has been working on cars since they were 20 over the 30 year old who started at the same age. But I'd also prefer the 30 year old who has been working on cars since they were 20 over the 60 year old who started at 55.
Who wants the old man mechanic?