It depends on you. On how serious you are in collecting bitcoin and what's your goal. If your goal is just to be rich right now and only for your self, you can call it for fun and after a few years sell it and travel wherever you want to go.

But if you are serious and your goal is to go long way, then keep it, wait til you retire and decide whether you are going to keep it and have a business because of it or sell it.