Humans don’t plan ahead for preventables and get angry if you diminish current QoL for long term safety. We know this. Earth getting a direct hit solar flare ends civilization. There’s no divine safety guard rails, we’d just be fucked.

I like your use of “when” because it is fairly likely to happen one day. It already has, and Morse code had just been invented IIRC. Not that long ago, just wasn’t a big deal then.