Held by my sons, private keys scured with third party always.

That will call a burn the coin  and few enjoy that price gonna rise!

Will eventually teach them too when they aged enough, or will try to put it on a bank when I felt sicj which I hope not, wanting to earn more for bright future my children soon.

I think my bitcoins will still there but since i didn't gave anyone my key so maybe nobody can open and claim my account. Bitcoin is decentralized and no one can control it nor the customer supporters the only thing can help us that make a backup for your private key and make your family members aware about it.

If I die, I think my bitcoins will still be there in my wallet because except from me, there's no other people who knows my password in my wallet.

I don't have much bitcoin in my wallet so its nothing to them unless it is worth million dollar in value. But soon i'm going to teach them how to earn bitcoin rather than teaching them how to access my wallet. We don't know when we will exit in this world so this will come unexpectedly and not everyone is ready for that.

This is a good reason why you should encourage one of your relative, siblings or child to know about bitcoin or  cryptocurrency because just like gold and diamond, they are assets and has worth.
It is also really essential for them to know not just only about bitcoin but also about any other cryptocurrency because it will be so unfortunate if one dies and this coins gets to waste away in their wallet without anybody knowing.

Also, no matter how small the amount of the coin is, they could worth millions of dollars in years to come. So do not hesitate to tell them.

This is the only advanrage that the Bitcoin is not worth saving assets than the Banks because when someone died, all their assets will be handed to their families because the banks can be override or can be negotiated due to some unfortunate events but Bitcoin isn't.
Lost your wallets keys or died without backup and handing over the keys will be the most embarrassing.

If someone die and he holding Bitcoin, what will happen is Bitcoin is frozen in his wallet. Unless they given the wallet data to the closest family who knows Bitcoin too and probably his Bitcoin is safe. For me i do not give any information of my wallet to anyone and if i die my Bitcoin will not be saved.

I had never think before for this possibility. Really horrible.

But its the truth of life as person born some day he have to go. Anyways, I will think for it, seriously. As I have to aware someone about my personal asset. But still its so much unimaginary. As if anyone give details before death, what are chances that person can get that exactelly. Because the person who die cannot check.