At times the altcoin investments used to give high return than bitcoin. Apart from this it is the ease of investing as a whole. Everyone weren't able to invest on bitcoin as a whole. With altcoins this is possible. Same as bullish season of bitcoin there is altcoin season by which we can expect big bounce in the price. Whether it is bitcoin or altcoins, it is the right entry and exit point that makes the investment more interesting and profiting.