Instead, your tax receipts will double, triple, quadruple even to rebuild everything that was destroyed. You really think Texas cattle, Texas oil, and Texas industry will make it out alive in an actual secession? Even if by the miraculous Texas manages to make it out alive, it'll be nothing but a smoldering scar of what it used to be. And at that point, you'll be jumping over the wall you built to Mexico to go beg them for bread.
I'm not saying that to be a haughty-taughty, chest-pumping American. That's just the reality of war man. The infrastructures that we've built have allowed for far, far more people to survive than what the land can support in-raw, and when you dismantle that infrastructure, which is the first thing the US military does, people die on an industrial scale.
If you actually want secession, you're even worse than the bankers, the politicians, and the vampire squid you claim to condemn. Thankfully the people you've voted for to lead you have more common sense than you do.