I am newbie.

It just keep me wondering if there is enough of bitcoins for everyone in the world?

We have 7 billions people.

With 21 millions BTC only...

And coins lost never get replaced...so over time it will only get less and less, once it reach below a certain limit, it just can't function as a currency anymore. If it does not function as a currency, what purpose does it serves?

So how it is logical for anyone to use it as a currency if BTC only decrease in number over time?

Please someone kindly explain to me...will appreciate.