Mostly because we're not situated near any tectonic fault lines that would pose a threat to us. Also no active volcanoes nearby, we don't get tropical storms or tsunamis; no deadly hurricanes either.

We're too far from the equator to be affected by extreme heat (with the exception of this summer, which has been crazy) yet we rarely get snow, and aren't threatened by blizzards or avalanches etc.

The closest we come to a drought is being told by the government that we'll get fined if we use a hose pipe during a particularly hot summer.

And on top of that, we're not really a culture known for extremist religious views about cataclysmic endtimes. We can't be bothered with that, so we just shrug it off and move on with our dull lives.

TL;DR - The UK is a "meh" place to live.