I hope it didn't sound like I'm against answering questions, that isn't what I think, at all. At some point, this kind of thing can tip into severe phobic/obsessive territory. That's what happened with my son. You will know it when/if it happens--it disrupts QOL.
Absolutely give age-appropriate answers (but still think bedtime isn't the best opportunity)! It's just important to bear in mind that asynchronous development can trick us into thinking that reasoning ability equals emotional resources. Each child is different. Mine wasn't capable of processing terrifying natural disasters via cognition at that age. He needed additional skills. YMMV
