It has not occurred to me. Well, I'm gonna get to teach my family members about bitcoin, how bitcoin works and tell them my bitcoin and wallet accounts. If anything happens to me, then my family members already understand, can access and manage it.

Your money can be losed except if you store private keys in place where your family can access it, then they will be able to inherit it or get your money.

Without your details you can't claim your BTC. You can save them up somewhere or even include it in your will, that way your family or heir can get access to your btc incase of death.

You can not know the exact time that you will die, so you will not be able to promptly tell anyone about Bitcoin or teach them, your bitcoin will freeze and sleep permanently in your account, and to avoid this situation occurring. I think you should write a will or a backup and put it right in your room, tell people that if you happen any problems and not awake, they should read that, it will help their future, I am also doing this, although I do not teach anybody in the family about bitcoin but I believe the internet will teach them all, what they need to do is look for what I leave for them.

Wow. Thanks for reminding me that I need to do that. I haven't think about it yet. But of course, I will teach my parents or my girlfriend to access my account in Bitcoin just in case I die instantly. Besides, I can't take anything with me when I die.

Well we are on the same path. My reason is that my bitcoins is too small for my children to inherit. I am always encashing my bitcoins to pay for the monthly bills and the daily need of my family. I also have to pay for the tuition of my wife who is in college and my kids in nursery. Even If I die without teaching them, I have no regrets since the bitcoin I have was already being used for my family's needs and future.

I also feel curious to what will happen to my bitcoin when i die and no one know that my password. Will the bitcoin be not accessible or it will be easily hacked by other people?   

Practically your bitcoin will stay to your wallet forever and it will be really hard to retrieve it because you really need the following email password and two factor authentication if it is in the trading platform, password and phase and private key if it is in electronium or hard wallets like trezor or ledger nano these securities is really tight because if you only in the world know this no one can access your wallet.

Hmm ... interesting question. I did not even think about it until now. But in fact, quite an important point. I think that I will leave them to my children XD. Although it's too early to think about it ..

I've also been thinking about this recently. So I keep all my keys in a separate folder, which in case of an accident with me, will get to my closest person. He knows that. I feel better.