If you buy 3 bitcoin and forget this for 10 years maybe you will become rich because they have possible the price will become $10,000 each bitcoin because the price everyear increase and I believe bitcoin will live long but it cannot live for more decades. Maybe 20 years is the maximum they live but I hope bitciin will live long . Many people for sure hold their bitcoin for their future. But remember no one can knows what happrn in the future maybe you can earn a lot of money but they have possible that your money gone.