If you have a lot of resources and have enough money to compensate your needs.. then selling your Bitcoins is not an really option. You should invest with your Bitcoins rather than selling. Just my thoughts.

but I think even if you still have the big money in real life and you do not need the money anymore, does not mean you do not sell your bitcoin that moment dude ? I think it would depend on the circumstances of the current price? of course, if the current price is high you should sell it and take advantage of that opportunity, because the opportunity will not come twice
Some think that the opportunity appeared is not the biggest opportunity yet and they still hold their bitcoins hoping for the price to rise more. But since the price of bitcoin is very unpredictable as it is base on supply and demand we cannot expect it will only move one way. Hence, we should device a plan to sell and once we see the price we do not need to hesitate but sell.