It's a good idea. Keeping faithful for the best investment. Bitcoin proves as a cryptocurrency world always deserves long time trusted store of value. Bitcoin has a very limited total supply that makes bitcoin price from year to year will be more expensive depending on the level of difficulty when want to get bitcoin, the higher the difficulty the more expensive price bitcoin. Bitcoin still rises after every fall so there are chances that it will continue to be like this in more coming years. Always rising from it's fall and that gives us hope somehow that bitcoin will continue to rise in more coming years and it is a right decision to invest in bitcoin for long term investment.