why should there be a statute of limitations?  if you inherit wealth generated in the last century..should the court respect that? or if you're a rockefeller, for instance, and you live off a trust left in perpetuity to descendants .... should it be negated?
 a large chunk of  chicago lakefront was deeded to the city by several land owners in the late 1800's  - people who realized it was in the city's best interest to have open space to the lake for all - it was to be open forever.  the lakefront in smack dab downtown chicago is still open for the most part. some of it it cemented over to stop erosion but even that is nice - at nicgt in the summer,  tons of people go down there, mingle,  and make art on the sidewalk with chalk. unwritten rule - touch no ones else's art - let the weather take care of cleaning the "canvas:"  however,   the city spread and the future land owners didn't have the same civic spirit and built their homes/skyscrapers further down.
 but it makes chicago great.