Why would I want to keep BTC in my investment portfolio? That's most hyped and quite overvalued coin I'd say.
There are other more technologically advanced coins. Is it because of "digital gold" and store of value properties?
Well it always depends to you if you want to invest in bitcoin or not. If you know some other cryptocurrencies that are better than bitcoin, you can invest to that because it can give you bigger profit in the money that you invest. Bitcoin nowadays is making a noise to the market because of its continuously increasing of price. It experienced a massive increase in price in just only a year thats why more and more people are starting to use and invest in bitcoin.