No altcoin can compete with Bitcoin in economic fundamentals. Bitcoin has the first-mover advantage, the network effect, the famous brand name, and most importantly: Large numbers of people, rich and poor, of a thousand opinions and religions, are each and all forcibly united by their common selfish interest in Bitcoin. Bitcoin isnt only a technology: It is a sociological phenomenon. That is Bitcoins economic foundation, and a power no altcoin can hope to match.
we don't know what could happen in future. Maybe bitcoin will become goverments instrument and everything will be controlled on it. Like the Internet became. Of course, you could use Tor or VPN but then you must say "good bye" for movies, games, videos and others things which needs high speed internet connection.
So, if Bitcoin will move in such way, we need something else. Monero for example.
also, we need some system for commiting open source project without showing real identity. Because, i can't be sure that "bitcoin team" (or any other crypto team) are not corrupted by special services.