It should be mentioned, though, that the remedy to the brutal summers can be just as brutal. I'm sure that I'm not the only person who expects summer colds because of constant transitions from the sweltering-hot outdoors to the icy-cold air-conditioned tundras that every business maintains.
(Also, I'm sure parts of Texas get severe winters, but I've never seen one in Fort Worth. (Or did you mean something different by 'both ends'?) The main thing that I see here is that houses are built with no effective insulation, so that, during the winter, a perfectly manageable temperature outside can render the inside frigid.)
EDIT: I'm sorry for downvote whining, but, just to be clear, this isn't just a "the weather, amirite?" post; while I agree that living in Texas without AC is probably unbearable, I also think that there's no need to crank ACs to the levels at which businesses (and buses!) set them, and I can't imagine that this aggressive cooling doesn't have a significant energy impact.