but he's right in a way. long term he said, but didn't specify how long. I'm sure everybody here agrees Monero will be obsolete within 100 years and go to 0.00
Hardly.
I don't agree with you.
Why should it be so?
hardly any currency in history does. Not many currencies last longer than 100 + years
You are making the mistake of comparing Monero to currencies that have central authority. The currencies die because of hyperinflation when the central authority starts to print money big time at some point.
Monero will never have hyperinflation. It is the ultimate save haven just like gold but in digital form, therefore the storing costs are lower and it is more convenient than any physical product (it is easier to carry a trezor full of Moneros than bricks of gold).
i was comparing xmr to currencies in general.
cc's are a completely new thing, in many ways unpredictable. i would speculate however that there will be other better faster stronger currencies.
I am talking currencies in general.
During the past century or so the most of currencies are fiat currencies. Also fiat currencies are not unknown before that.
It is fiat currencies without any real packing that dies because of hyperinflation created by excessive money printing.
Gold is very good example: it is a real asset and never has lost purchasing power. You were able to buy a new suit with 1 oz of gold 200 years ago. Also today you can buy a suit with 1 oz of gold.
Credit cards are not destroying the fiat currency (perhaps one's personal finances but not in general economy's finances) but the money printing which is used to finance the public sector deficits.