Securing your future is good but I will not recommend to save bitcoin if you are want to have fix money because what if you save a lot of bitcoin but after 10 years the price is very low. Investing is good but make sure you have a plan and investing to the bitcoin is good to have a better future but we do not know what is the outcome. There is specific amount of bitcoin for securing your future it depends on your strategy, hardwork and also your bitcoin or money that you already have.