See I think this is really confusing.
I suspect you find many things confusing.
They might assume once a person gets ‘old’ (which in a kids mind is probably 30s lol) then they die
My children know what 'very old' means. They know humans usually live 80 years or so, and that grandad was 90 when he died, which is very old for a person. They also know animals tend to live much shorter lives, like our dog who was very old at 15, but 15 for a person is very young. It actually opened up a great conversation about different animals, so everything is a learning opportunity.
Or if you say their life ends, they might ask where they’ve gone, or ask to get a better doctor etc
I did clarify after that posts that we do and always have used the word 'died' about deceased relatives. That died means there is no coming back or doctors that can make you better, like with my parent.
It’s a big philosophical question and frankly even we don’t haveallthe answers.
Death itself isn't philosophical. What you believe happens after may be, but death itself is absolute. Whatever you believe, your loved ones are gone and not coming back to this world.
I think the cycle of life stuff etc is nice, as they say on Avatar ‘all energy is borrowed and eventually we have to give it back’
Nice is good, but again it's not covering the immediate truth of death. It's a fact that people are made of energy, and that cannot be extinguished. That doesn't mean we are still us when our brains pack in after death, we don't go live on a cloud mansion with beautiful angels and watch our relatives live out their lives for eternity. I used to hate that thought as a child, still creeps me out now even though I'm 100% atheist in my views.