Sigh. I can’t believe this needs to be spelled out for you and your ilk.
There are other people out there beyond your grandparents. Regardless of how you and they personally feel — I don’t want to die just because your personal definition of “living” (hello, a few months of lockdown or similar is still alive) facilitates disease spread. I AM NOT WILLING TO DIE PREMATURELY just so your kids can avoid going a few months without physically engaging peers, or just so you all can avoid having to take simple personal precautions when outside.
Lest anyone accuses me of not understanding without raising children- I am literally holding my sleeping 5 month old as I type this.
It’s not about being told to be afraid of everything (where does this idea come from? literally no one is advocating that). It’s about responding to existing, real dangers with appropriate measures.