Other Alternative cryptocurrencies are being launched day in day out. Would these Altcoins be widely accepted as Bitcoins?
That's probably a no. They might never reach the level of BTC.
Indeed, altcoins is just an alternative option for people so they can diversify their portfolio well but never to match up bitcoin. Cryptocurrency is our future and bitcoin leads them all, but owning altcoins is an ideal thing for people who really want to increase their resources.