Si, you only left them 4 years and 11 months because your tight.
My rears lasted 62k miles, 4 & 4 months.
But i got it at 56k miles so thats me guessing previous owners never replaced them :rasp: They were falling apart.
If it aint broke don't fix it tbh. They had material still left, discs were still over min thickness and all was operating properly. Why change them when they don't need changing? Next you'll be saying you throw away tyres with 5 mm tread left on them