I believe people are not venturing into Bitcoin for fun but for profits making. And whosoever believe he can make enough profits from holding Bitcoin overnight isn't an investor but a trader as making surplus Profits that will be enough to transform/change one financial status for the better doesn't happen quickly but also requires a steadfast consistency in accumulating Bitcoin and holding it for a longer period of 10years and above. This type of approach is essential for an investor with a Long term plan in Bitcoin who is also determined and focus on making good and reasonable amount of profits from his portfolio as he can only achieve better results if he can be patient to hold for a very long period time. The bigger the stash and the longer he can hold will determine the size of profits he will make from his Bitcoin portfolio in the long run.
I don't think anyone will ever see Bitcoin as fun stuff, I think an investor can say he or she is happy when he keep accumulating and notice that his or her accumulation is progressing then we can actually say is fun but for me I see Bitcoin investment as a serious thing so no jokes, the only set of people that think that they can come and make it big in a twinkle of eye in Bitcoin investment is either those that doesn't understand Bitcoin investment concept and how it works or traders just as you said apart from this set of people there's no investor that will have such mindset concerning Bitcoin.
I think it is an established fact that Bitcoin is not an investment that one thinks that he or she can just invest and hit it big time immediately, there are processes that has to be followed if any investor wants to actualize he or her aim in the said investment which is continues accumulation steadily and hodling for a long-term.