Oooh boy where to begin...
Texas is the only state in the union that has to have textbooks printed just for its school system, since "the people" decided they wanted Thomas Jefferson, labor unions and separation of church and state edited out of history books, and intelligent design taught in science class.
Texas has the most overweight people per capita in the nation, and the highest incidence of heart disease, resulting in the few healthy people living there paying astronomical health insurance rates to subsidize the bad habits of others.
Texas is the only state whose governor is regularly quoted endorsing secession as legitimate public policy.
Texas runs budget deficits, but gets bailed out YoY with consistent revenue growth from whoring itself and its natural resources to the fossil fuel industry, then purports to be good at managing finances (much like Sarah Palin).
Texas took huge amounts of federal stimulus money, all the while railing about how government spending was the root of all evil and how Texas is the model for self-sustainability.
Texas's primary industry is one that contributes more than any other to the now inevitable unsuitability of the planet for human habitation (but great job on all that revenue guys!)
Texas is a hotbed for frivolous patent and IP litigation, as conservative judges there love sticking it to liberal tech companies.
Texas is as infamous for backdoor redistricting deals and insider shenanigans in state government as Chicago is for city politics.
Texas produces more waste per capita than any other state, and recycling programs are virtually nonexistent, even in larger cities that could easily sustain them.
Texans are the largest energy consumers in the country per capita, and 1 out of 3 cars registered in Texas gets under 12mpg.
Joe Barton, who called BP being made to pay to clean up the largest oil spill ever in his own state a "shakedown" and apologized (no shit actually apologized) to the CEO of BP in open session, is from Texas. He is now the chair of the House committee overseeing environmental policy.
I have lots more but you get the point.