True in theory, but regulatory bodies and governments can severely limit access to and redemption of Bitcoin for goods and services. While the network will always be usable through an internet connection, and Bitcoin will always have value, there is a question of what happens if the use and custody of BTC is heavily regulated or straight outlawed due to Governmental fear of losing their monopoly on the money supply. Sure at a fundamental level, governments and regulatory bodies cannot control who or what you send your bitcoins to, and from where you might receive them. However, it can be made extremely difficult logistically to spend your Bitcoin on goods and services which is ultimately what you will hve to spend it on if you’re going to live off of it.