*Hypothetically...the thought of someone dropping me and dh in the middle of Gaza now would be awful. But I'd go into practical mode. We're fit and healthy adults, we'd (obviously) do our best to stay safe, whatever that looked like.
By comparison, the thought of someone dropping us in Gaza with our three dc makes me feel ice cold with terror. Not because I'm a wonderful mummykins who loves her ickle ones sooooo much. But because it's three whole people who can't care for themselves or help in any way*
And the same would apply if you were someone with, say, elderly parents who couldn't care for themselves. Bedbound, or reliant on dialysis, or in the last weeks/months of their lives or disabled in some way, who couldn't run and hide, who needed special food or medical treatment every day. I'd be just as terrified in that scenario - but as a daughter or a sister or a niece. Feeling terror that you can't protect your family and feeling hugely protective and responsible for them isn't confined to parents.
But I think as a VERY big generalisation, parents may be able to visualise or 'feel' the horror slightly more than your average healthy single adult or adults, with thoughts of those they're responsible for at the front of their minds
Oh balls. We're back to 'parents are just more empathetic and feel things so much more,' aren't we? I don't know about anyone else, but I don't regard my reactions to a horror like the last week In Israel as being an entry for some sort of empathy Olympics.