The answer to why your downspouts are worn out is likely due to age, exposure to the elements, and lack of proper maintenance. Downspouts are responsible for channeling rainwater away from your home's foundation, and over time they can become damaged or deteriorate.
Some common signs of worn-out downspouts include cracks, holes, rust, and loose connections. This can lead to water leaks, flooding, and potential damage to your home's exterior and foundation. To address this issue, you'll need to inspect your downspouts regularly and consider replacing them if they are beyond repair.