We aren't seceding, we promise. Sure it's interesting as a thought experiment. Texas has lots of things similar to developed nations, some of which many other states don't like international airport, excessive land, military bases (not sure on the comparison here), several industries including a huge chunk of the petroleum industry.
I think it's silly to pretend it would happen though, are we unhappy with the federal government? Sure, who is honestly pleased with how things have been trending lately, or even the past couple decades? But we have issues with our local government too, so it's not like it would be all sunshine and sweet tea if we didn't have the rest of the U. S.