I say the same! Bitcoin is now nearly 10 years old. Would you use a 10 years old computer? or buy one of these? But there are reasons, why BTC will still rise in prize:
The point why Bitcoin will be strong in future, is because IT IS one of the most famous cryptos and a kind of digital gold. The amount is limited and we mined already 17millions/21millions. It's the same like gold. These days it is easyly possible to paint steel with golden color that nobody see the difference, but on the market it is worthless. The price is made in our minds.
The second reason for the btc rise in 2018 will be the fact, to buy nearly EVERY cryptocurrency you need first bitcoins.
The third reason is the lightning network and cheaper sending taxes in the future.
(My opinion, no financal advise)
Very true, valid reasons for BTC bull case throughout 2018,2019., and is impossible to exactly predict...but on a long run...
the way I see it, even if all this goes as planned for BTC, they will still be just an old crap piece of software, when Cardano launches full product...that might happen in 2022 but when it will I just dont think BTC has enough room for upgrades to compete.
If we as humans will eventually be able to make a change from fiat to crypto than I think we will also be able to discard BTC fast.
Yeah , it is old. And there will be better versions of BTC. But I think it will have always a lot of worth, because it is the father off all the cryptos.
Of course, for investing it is more intresting to put money in the new technologys, because in a long term it is possible to 100X or even 1000X, when you buy at a good moment. And i agree that the market dominance of BTC will slowly go down