Yes I agree. All we know that bitcoin is the most popular and powerful crypto in this industry. Even that there are so many down or price fall it can stay alive for a decade and I think this is a good foundation of a good investment. And it is a very progressive coin all we see it's progress.
His is a fact that can never be taken away from the cryptocurrency world, BC will always remain the best cryptocurrency technology and the most decentralized payment system that has ever been created. For the part of altcoins, we still have some altcoins that are very good like Ethereum and some of the top altcoins in coin market that can stand the test of time.
Other coins we are not seeing their increase will surely rise but it is not yet time for their season yet, I think alts seasons is usually when Bitcoin is of a speedy bull, especially when it remains sideways for some months, that is the period that I see some of these altcoins performing their own magical movement too.