Yes, I think Altcoint is still worth the investment, now altcoint prices are down, it's time for you to buy altcoint now to be made an investment, choose the good and profitable altcoint for the future
but in my opinion even though the altcoin price is now down indeed is a good opportunity to buy altcoins and hold until prices increase, but not all altcoins will increase and survive, so in my opinion before buying an altcoin to invest you better choose top 10 cryptocurrency like BTC, ETH, ETC and NEO because it's safer.
This is the good time to invest on the ALT coins as posted in the market, the price value is more affordable now, learn the ALT coins fundamental, market structure, and the most important indicators are the Stable fundamentals, clear market structures, and the level of confidence on the market.invest only what you can afford to loss.