[kqr2]

Unfortunately there are many examples of this in SF. Over time, this leads to very poor land use. Other examples:

1) Balboa reservoir : people prefer to keep it as an empty parking lot

http://sf.curbed.com/archives/2015/05/08/at_balboa_reservoir...

2) Francisco Reservoir : although there is already a park nearby, they chose to turn this into another park

http://www.sfgate.com/bayarea/article/SF-s-Francisco-Reservo...

Current residents are unfortunately much more vocal than potential future residents or housing advocates.