What's more useless than a full-scale public transportation system in an unlivable metro area? Does anyone think that the so-called "tren urbano" will pay for itself in the next 1000 years?
Why didn't intelligence prevail and fund (cheaply!!) an interisland bus system? Could have started out with two buses and two drivers, circling the island in different directions each day. How much difference do you think that would have made after 10 years. Service with more drivers, hardware and routes would have paid for itself. Instead, you have a tiny area choking on gas fumes.
DM
I dispute the premise
To the contrary, I find San Juan to be the most desirable/livable part of Puerto Rico. (I wouldn't consider living anywhere else on the island - at least not full time.)
The Tren Urbano is great. I doubt it 'pays for itself' - but it might when the economic (externality) benefit of decreased congestion on the roadways is taken into account. It gets reasonably high ridership - although it also charges *highly* subsidized fees to many riders. It is also extremely clean, timely, & (seemingly) well-maintained compared to other similar light rails.
The main downside of the Tren Urbano is where it doesn't go - Miramar, OSJ, Ocean Park, and Isla Verde. (Although it does run to the densely populated suburbs of Bayamon & Guaynabo.) If branches were run to, say, Miramar, Ocean Park, Isla Verde, & (in some form or another) to near OSJ, then this would be of tremendous benefit & would probably double ridership as lots of people live in Isla Verde & Ocean Park, but work in OSJ or other areas & traffic is pretty bad, especially to OSJ. I heard there was expansion plans to Miramar, but beyond that I do not know.