I agree with you that Bitcoin has a low profit rate but is considered the safest and most reliable crypto currency in the market, but for small investors there is no significant profit to be seen here.
In my opinion, if someone has more capital, they should also invest some part of their investment in altcoins.While it is very important for small investors to invest in low value coins but make the right choice based on their knowledge and experience, because the risks are higher in altcoins, but can give you huge profits at any time,and you can reduce the risks by making good choices.