How sure are you that any altcoin will do 10-100x and who tell you that Bitcoin will not do 10x?nobody can tell will actually happen doing the bull run. Infact many of this altcoins price are determined by Bitcoin price, so to be a saver side I will say Bitcoin is the best option to invest in, in order to limit the risk of it investment.
True because there is no better option than bitcoin and altcoins are highly risky investment, no one knows that what will be the future of altcoins. There is no doubt that it will give you much more benefits but the risk is also very high so bitcoin cannot be beaten by any other coin and others Coin's price are also related with that of bitcoin so hopefully a person will get more benefit with investment in Bitcoin rather than altcoins.