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?
You are not required to do so. To make it clear, investing to Bitcoin is a choice. It may be overhyped but surely it is really profitable. If you find other currencies more "advantageous" than Bitcoin, you are free on not to invest in Bitcoin. But I tell you thie, Bitcoin is th most profitable crypto investment ewpciaply for the long run.
Is it as profitable as it was earlier? Price is too high, transaction fees too. Easier to buy cheaper altcoins than bitcoin, cause you can earn more and spend less money...