Yes for investing purposes I think altcoins are the best thing to invest and trading of altcoin is also the best thing to invest, altcoin is the market where you can earn more then 10x of your investment and it will provides you a good profit also,
but if for me suppose I invest in bitcoin and when I buy it at high price, and after that bitcoin price goes down, I do not want to risk to buy or invest it on other altcoin, I do not dare to take kepuyusan which in the end will be wrong and makes me regret it, so I will keep and hold my bitcoin until the price will rise even higher again.