I totally agree that bitcoin can be less stable than other coins, the crypto market is control by supply and demand and i am sure that as time goes by more and more people will see the value in other coins and not bitcoin only.
bitcoin is less stable because it is a high volatile type of crypto while other coins like alts are not . when it comes to demand . altcoin were also indemand but still they are still more stable than btc .
Overall , btc is better this way because we can possibly earn huge profits due to the effect of volatility . not to mention that we can also loose more that we can earn but that is up to you on how you manage you coins .