Though there are really many reasonable points that deter people from investing in crypto, the reward is very high so it is not crazy to invest some money in crypto.
people doesnt want to invest in crypto maybe because they are not intersted on it thats why they dont want to invest, second is maybe they dont want to loose their money ,third is maybe because they dont have the knowledge and thoughts about crypto so i guess thats why they are afraid or they dont want to invest in cryptos.