Although trading seems pretty cool for those who can trade very well or those who seems to be professional in trading as well making profits. I just totally accepted investing at the bear market only on bitcoin since it easily bounce back to the price than altcoin, in altcoin investment most of them do not survived for long run and caused serious lost.
Most altcoins aren't suitable for long-term, they are only good for either scalping or short-term trades because when you are doing these things, you don't need to care about the long-term price results of that cryptocurrency because even if it moves up a little bit for one day or even for one hour, you will achieve what you were looking for and sell your assets immediately for a small percentage of profit.
Some altcoins are trusted by the market such as ETH, LTC, DASH, and some more, but other than ETH, none of the altcoins seems to be completely trustworthy when it comes to holding them for the long term, this is why traders only use altcoins for short-term mostly.