In my perspective, I believe that there is no permanent in this world but change, so I also think that in the future, Bitcoin will be replaced by more advanced, more popular and more user friendly altcoin.  I think it does not need to be decentralized since masses are already use in using centralized services.

With regard to investment, I also agree that new projects offer higher returns in time-to-profit ratio, but with a higher risk. We have seen many investors burned by new projects so I suggest taking full caution in investing on one...

@ the topic, it may take time for altcoin to overtake Bitcoin but no matter how long it takes, I believe one day a cryptocurrency will emerge that will outperform Bitcoin but before that, let us enjoy the opportunities Bitcoin offers.