You clearly haven't been in many 150 year old West Texas houses.
Good lord...
The spread of AC in the 1930s resulted in everything in Texas being insulated out the wazoo.
Your typical suburban home in Texas -- with no electricity -- is perfectly habitable without power.
Its an inconvenience, to be sure.
But, all this handwringing over a freak -- and fun -- event is laughable.
Want to fret? Fret about floods, tornadoes, hurricanes... those events leave people without housing altogether.
But, an ice storm and some snow?
Gimme a break.
If you were stranded in the wilderness in 3f temperatures and stumbled upon a typical suburban home without power but well-stocked with blankets, clothes, frozen food, comfy mattresses, bags of charcoal, a grill, flashlights, candles, and a new package of Oreo cookies, you would shout for joy. "We're saved!! Shelter! Thank God!"