well, you'll get rich in fiat with that but not with bitcoin... but it would be good if you have no other plan for your coins...
Even though if we are getting rich with bitcoins then I don't see any problem in it, as the main purpose is to get rich either by bitcoins or by converting it to fiat.
If someone plans to wait really long time until the price of BTC goes through the roof, then it is unlikely he will be able to convert to fiat anymore because it can happen only if Bitcoin replaces fiat. Seems not very likely though. Also know as: the right time to sell Bitcoin is when you dont need to anymore because Bitcoin become accepted everywhere.