Re: Does altcoins actually have the potentials of generating benefits to investors?
Altcoins have the opportunity to bring huge profits but it is not always a good time to invest in it, many people saying that now is the right time to invest in altcoins is a mistake. Altcoins should only be invested when the market shows signs of bullishness, altcoins are not a long-term investment.
In the bull market, altcoins will have already gone up and you would end up buying at the top, so it is tough choice and a difficult to make one. Once in the bear market, it is difficult to predict which coin will be going to the top in the next bull run - this ends up becoming a gamble. If someone is willing to take the risk, allocate funds separately for altcoin trading and bitcoin trading with strict rules to not mix the two. The altcoins are going to be a risky move to make while bitcoin is way safer if bought in the bear market.
There is definite potential for altcoins to generate benefits for investors. But this will happen only if the project actually has an inherent market making capability along with a good team and ongoing development. Difficult for them to compete in the mainstream market. 
actually it is true that altcoins will really have big profit potential for investors, but that applies when the bullish season is coming and for old altcoins (IMO). so it would be better if investing in altcoins is better to buy when the signs of the bullish season are coming, as @Ayers said