At 76, almost 77, if anything gets better with age, I would think that I would know it. However, everything I know of eventually gets replaced with something new. My original thought, though maybe a little romantic, was people. However, even we humans grow old, and eventually we will be replaced.
God has said that ultimately, He will replace these old bodies with bodies that will last forever. The older I get, the more I look forward to that day. To be sure, this old body does not get better with age.
bfrhodes99 