Bitcoin is a very popular crypto coin today, we know that Bitcoin will be very expensive in the future but I imagine if Bitcoin dies, whether there will be hope for the future of altcoin? because most altcoin exchanges are to bitcoins
your opinion is highly appreciated.

Bitcoin may die when a new virtual currency emerges better than bitcoin.
But this is not likely to happen.
Bitcoin is currently in great demand, and many believe that bitcoin will continue to rise in value.