Ten years for a cryptocurrency is a very long time. We don't know what will happen to decentralized cryptocurrency in another ten years. Of course, you need to store promising cryptocurrencies, but you always need to track market events. Even the best cryptocurrency can drop in price over a long period of time for various unforeseen reasons, if not forever, then for a very long time. Bitcoin is also no exception, let alone other cryptocurrencies. To get a good profit, it is still better to periodically trade cryptocurrency and be ready to withdraw your funds as soon as necessary.