I had AC on my 2008 iMac and the screen got replaced 2 1/2 years into the warranty. I've extended the use of that device for another 3 years. It would have cost me double the amount I paid for AC to replace the same screen without.
My 2012 iMac however was used and couldn't get AC. So far, no issues with it after it already exceeded 3 years *knock on wood*
I just got a 15" MBP yesterday and fully intend to get the AC. With everything soldered nowadays, it's more expensive and cumbersome to do it without AC.
However, like many have said, it's a personal preference thing.
My 2012 iMac however was used and couldn't get AC. So far, no issues with it after it already exceeded 3 years *knock on wood*
I just got a 15" MBP yesterday and fully intend to get the AC. With everything soldered nowadays, it's more expensive and cumbersome to do it without AC.
However, like many have said, it's a personal preference thing.