This would be a very risky course to take; currently there is 51% support for independence and that could as well go up as down when given the opportunity. With both the Spanish and Catalan economies in crisis it is likely that such a referendum would only be bolstered by anger at the government due to the state of the economy. This might therefore be an option for Spain at some point in the future when the economy is back on its feet and so less of an issue but at the moment it would be waving goodbye to Spain as we know it.