If your home still has the original soffits, bargeboards and fascias fitted then you will only be too aware of how time exhaustive it is to maintain their appearance. Without that continued care and attention they can easily start to look somewhat untidy and unattractive on the eye, leading to their performance levels eventually dropping.
The same issues regularly occur in softwood timber roofline which can result in unsightly rotting. Instead of permanently resolving the problem, some people try to disguise it by applying capping boards over the softwood/timber fascias, but that is only a short-term fix as the issue will still lie underneath. And in any case, the nails can easily come loose and leave the fascias exposed.