Buying altcoins now can be a risk, because the market is falling, and altcoins tend to fall more than BTC in the course of a downturn, with many coins even likely to disappear.
Indeed, it's just we've to choose which altcoin has proven its potential like ethereum, ripple, dash, XLM and or top 10 altcoin in CMC. Because in this situation there will be more altcoin have high chance to death. Very careful in choosing altcoin is mandatory.