Just buy some or at least one. Hold it for 5-10 years. Try trading it and you'll get rekt. Don't ask me how I know 
Lol I like the way that was put. If anyone at this stage does not know that bitcoin is here to stay and the chances for it to keep growing is definite and I do not really think they deserve to even buy in the first place. Looking from the start and the possibilities of the future from this point forward, one would know that we are just about to start another level of growth in the next few years.