The nearest train station is Torreblanca I believe, it is more or less the same distance as Reus to Tarragona.

Why Ryanair start or drop flights can only be down to economics whether that is subsidies or cheaper landing fees. If you want the flights at the right prices you simply have to go to / from where they are. I have flown into Barca, Valencia and Reus, and departed from Luton, Stansted, Gatwick & East Mid's, for my flight next week I am flying to Zaragozza. As Jack rightly says Ryanair is not a social service and to put it in perspective the flight cost is still cheaper than the taxi I get to a UK Airport.