Absolutely no, Bitcoin may become a part of the banking system if they find it useful enough. The governments need to control the money flow, so they may integrate Bitcoin into their system or exploit Bitcoin under table. So it is a brilliant idea to stock up with it anyway.
I don't think Satoshi built Bitcoin to take his banking friend's job. He wanted an alternative for all the deviousness of a centralized system. However, invention and innovation works as a lifestyle, nothing moves on faster than the Brain, look how everyone forgot the post office, yet it's here. Nothing ends anything, preferences makes the changes and it travels very fast across the world, billions of people can share one desire to use E-mail, and the few others left would choose the post office for certain preferences.
In other words, they're people who will never leave the bank for Bitcoin, and there are transactions that'll always require the bank. But over the years to come, people won't rely so much on the
centralized banking system, which hits the goal of Satoshi.