It is never too late if only we still believe in the potential that Bitcoin holds, if $100k was achieve there is more on the way because Bitcoin still have a long way to go $100k is not the end of the road and if only we can carry out the due cash flow management with patient for a long term one can still get something out of Bitcoin, Bitcoin is for the future hence let focus more on what it can do for in the future than the past. However, it has always been advisable for anyone not to do more 10 percent the size of their Bitcoin in to any other coins, because it reduces the vulnerability of having potential losses considering the fact that Bitcoin is the best most reliable of all coins.
Of course Bitcoin still have a very long way to go, so it's left for us to used what happened in the past as a lesson and do the needful things now. Because Bitcoin have a great future ahead, so there is no need for anyone to start worrying about Bitcoin, all our focus right now should be on accumulating as much as we can afford and hold for future purposes. However, just like as you have said I think it's essential for us to always understand that Bitcoin is more reliable than other cryptocurrencies.