To me bitcoin is there to gives you money when you're satisfied to take the money or take your if can't wait when is dropping. I can't hold for too long is personal or I will never take investment in a short till personally.
Hold the amount of bitcoin you can afford to leave with for a long time without any panic on the price whether it goes up of down, if you hold bitcoin and you know ot as an alternative financial and investment tool it will bring a level of freedom to you are tou are sure, that your bitcoin can not be blocked or unusable and no one other than you is in control of your bitcoin balance.
So to me, I have multiple reasons why I hold Bitcoin, but my ultimate reason is for the freedom it presents and is a readily available alternative.