60 fps only matters for shooters & raceing games imo (also competitive games like mobas).
Everything else 30 fps is fine, and eye candy is a better goal to aim for.
Honeslty I think removeing screen tearing and such is more important.
G-Sync or Freesync, is something Id want more on a pc, than a pc thats able to run everything at 60 fps.
*edit:
I hope both slim versions of Xbox One & PS4, will be able to support Freesync.