Schweinhund

I am wondering if these are the reason cars seem to get noisier and "harsher" as they get older. AFAIK, only these bushings and the shock/spring mounts isolate the cabin.

Although these are not wearable items, they do age and when they age, they dry out an become harder resulting in more noise and harshness.

I am curious to know if anyone has replaced theirs and can comment on the change.