This depends if that coin will still exist after many years. There is no reason to keep some of it if the developers abandoned that particular crypto. The huge increase of doge last year was only because of Elon Musk's hyping it. It's still useless up to this day and no serious development or utilty was made. It's dangerous to rely on those kind of events when investing into crypto. I'd rather invest my money to those who have real usecases even if its possible return are not that big.