The two don't necessarily have to survive one. Bitcoin has been No. 1 from the very beginning, and no one can shake it. The altcoin team will naturally destroy it if they make enough money. They dont want us to do anything. Their purpose is just to make money.
perfect answer and this is why we also wanted to earn from those coins , admit it but almost everyone of us tried to invest or still investing in altcoin for a sole target and that is to earn easily while Holding our Bitcoin for long term plans right?
bitcoin will always be our first choice but we should diversify and that is to put at least some part of our investments in altcoins.
We need to determine our purpose in entering this market, if it is profit target, then we should not ignore altcoin, no need to discard it when it can also be profitable for us. Flexibility for our investments to get the best return, we can use altcoins money for short-term investments and if they are profitable, then convert part of the profit from that into bitcoin. We still invest in altcoins but remember that bitcoin is the ultimate goal to bring prosperity as well as wealth.