Keeping cryptocurrency for ten years is hardly advisable. The cryptocurrency market is developing very quickly and the situation often changes. In ten years, most likely, your chosen coin or token will be gone. This also applies to Bitcoin, or their value will fall again to the one on which this coin was purchased. To have a profit in a cryptocurrency, you need to at least periodically monitor its price and make the necessary decisions in time. So long retention of our coins and tokens can be profitable only in isolated cases.