Have you ever been concerned about Bitcoin's longevity in the mainstream world as a decentralized cryptocurrency?
Not really, because Bitcoin has the backing of the government-sponsored media and banker-funded institutions like Blockstream.
The longevity of Bitcoin is not debatable because as the world moves forward and gets more digital, Bitcoin grows in essence. Now, adoption has grown way up comparing it to years back. This shows how people become interested in Bitcoin and cryptocurrency after reading the concept and whitepapers of some projects.