Experience is the best teacher they said and you have now know that Bitcoin is not a Ponzi scheme as you first thought and for me I don't always believe with the saying that opportunity comes but ones no opportunity don't only come ones this is now another opportunity for you to invest into Bitcoin for there is not time that one invested that is late anytime you invest is ok but the best time to invest is now and also have it in mind that Bitcoin investment is a get rich quick investment for you must be patient and be able to hodl for coin for a longer period of time, you can achieve this by setting aside your emergency, reserve and float fund so you won't tamper with your Bitcoin hodling incase any unforeseen circumstances may occur you could also adopt with the DCA method which will help you accumulate more Bitcoin in different interval either weekly or monthly as the case may be because Bitcoin investment is best sighted and profitable for a longer period of time.