There are a lot of coins to that worth invest. I can understand you're thinking most coins value is getting loose. But we are in middle of the bearish. Soon we can see bullish and all coins will start to rise. Then we can see which altcoins worth to invest.
As usual bearish is the reason for this low market for cryptocurrency. When will this bear market ends? I hope it will not last long or bitcoin will going to collapse. Some of the investors now are moving away already. Others will going to follow.