Why would you assume no conflict exists between the goals of all the worlds peoples "living like Texans," and preventing environmental catastrophe? The Earth is facing serious climate change just from a plurality of humans living rampantly consumerist lifestyles, I don't think more of that is in the cards unless the number of humans drastically shrinks.
Let me be clear and say that "living like Texans" is a shorthand for a first-world standard of living, with maybe a touch of extravagance thrown in. I'm not advocating that everyone do in fact live like Texans if they don't want to! People should be free to live like monks if they want.
But actual people on the ground, especially if that ground is in places that aren't as developed, do in fact want higher standards of living. I do not see myself as having the moral authority to tell them that they cannot have it because of environmental reasons. I'd rather leave it up to them to decide whether they want to "drill, baby, drill" now and live with the possibility of facing the music later, or keep living in huts.
