PacBell

I can think of one good reason:

Not everyone you might want to peer with on the West Coast
is at the PAIX.

Curt-

Right, the PAIX by itself wouldn't be enough (though the
  lighting is really cool); but with the PAIX /and/ MAE-West?

Yes, the lighting and tile is very nice. It also would be hard for a
airplane to crash into it. The problem is that MAE-West has a lot of
problems. It is worth the extra $$ to have that connection when MAE-West
dies.

Nathan Stratton President, NetRail,Inc.