And i would like to ask you a question with "non-technical" terms :)

It's about bitcoin hard drive wallet or the bitcoin core, which represent my stock of Cryptocurrencies.

Assume that I have 5 bitcoins that are physically stored in a wallet on my local hard drive. One day this hard drive is damaged, no way to restore, so where will my bitcoins go? Does Bitcoin ecosystem will lose 5 coins from its total 21 mils of coins?

As what I can imagine, bitcoins is similar to gold, except gold is tangible material, bitcoin isn’t. So if I store my gold in a secret place and then I lose the address to look for it again, the gold is still there. But bitcoins are just digital, virtual instances. They do not really stay in a position in space. So how we can determine they are?