altcoins are the best investment if you don't get caught up in the hype. but if you are one of those people who are easily influenced by some random person telling then lies then you will lose money and it becomes a bad investment for you!
in fact a big part of my bitcoin holding is because of investing in altcoins and dumping them at the right time.
Perfectly said, Altcoins are good for trading and only some coins are worth to keep for long term and balance coin just trade and forget it because if you love the altcoin then it will surely ditch you. Just trade and keep earning bitcoins as bitcoin is the only crypto currency which will be high in long time