Tanks, profitability, maybe the deal with the supplier ended and the operator took it as a good time to retire, or the supplier got annoyed. What BobsArmory mentioned is certainly another possibility.
Tank problems are the biggest and most pressing reason to head for the hills, though, generally speaking. There are pieces of prime real estate in this city that have been sitting untouched for close to fifty years for that reason, and I've seen construction projects on former station sites turn into a nightmare. The last time I saw something new go up on an historical station site was back in 1989, and fortunately for the builders, the company who contracted the building to be done had very deep pockets. They needed it.
Tank problems are the biggest and most pressing reason to head for the hills, though, generally speaking. There are pieces of prime real estate in this city that have been sitting untouched for close to fifty years for that reason, and I've seen construction projects on former station sites turn into a nightmare. The last time I saw something new go up on an historical station site was back in 1989, and fortunately for the builders, the company who contracted the building to be done had very deep pockets. They needed it.