For ordinary people like me and those who doesn't have vast knowledge about cryptocurrency is that I won't invest in other altcoins that are new or not popular instead I would invest in altcoins and coins that are in top 10 or within top 100 in market.
It was a wise decision. I believe that the majority of altcoins in the top 10 and top 100 are altcoins that have been interested and tested by investors long enough and they are safer than other altcoins. However, sometimes we also have exceptions like BCC, LUNA and FTT, they were also extremely large altcoins in the market but failed. In addition, some lowcap tokens outside the top 100 also have strong growth potential and bring huge profits to investors.