Not a bad idea, if one can afford it. But most people can't afford it.

I'm less than 10 miles from USA's largest subbase, one of the biggest concentrations of nuclear weapons in the world and an obvious target. If they're hit I'm toast (burnt). For the more prosaic disasters, like volcanoes and earthquakes I have food and fuel for a few weeks, I have some chronic health issues that unmedicated wouldn't kill me instantly but lasting more than year or two would be unlikely.

I feel the biggest threat is the Anti-vaxxers. Mutated measeles could wipe out a lit of people. Just imagine if someone released a small pox influenza cross.

Not any more.. Was born in a (US) west coast target. Moved away just far enough to ‘survive’ a twenty megaton airburst over my hometown. So dug in, literally.

Planted an ..eden (we know the concept), and preserved the harvests, bigtime! Wood heat, spring water, food supply, blast-proof basement/ garage, and firepower..

Never needed it … becoming proud of Humanity ..even the russians. Anymore, no fear, though the world’s still in MAD (Mutually Assured Destruction) mode…

No current threats beyond economic in my newest location. Might be concerned around a port city, but not much one could do to prepare, if only for a ‘dirty bomb.’ China will soon catch up, and Russa’s ‘rust’ is a concern, but for now, launches would be accidental. If not - the aggressor would be toast ~

I think it will most likely be something we bring upon ourselves that will cause technology to fail indefinitely. Our modern society is far too dependent on an extremely fragile electrical grid, limited fossil fuels, and a vulnerable data network. A massive solar flare, viruses, or EMP's could all hurl us back into the bronze age in a matter of days or weeks.

Beyond keeping a modest supply of clean drinking water, about 30 days of food, medicine and first aid supplies, and a few thousand rounds of ammo, I don't get too worked up over it. I figure if the lights don't come back on by the time my 30 to 60 days of supplies run dry, I'll probably wish I was dead soon after, anyway. I simply don't have the skills to survive off the land, long-term. Neither do 99+% of other people in our modern society. It will be pure hell pretty quickly, and I don't think I would want to stick around for that for very long.

Those people are generally right wing nut jobs who think zombies and democrats are after them. Too bad zombies eat brains and would starve on a republican.
In Houston the main concern is flooding and hurricanes. Be careful where you build and stay prepared during hurricane season.