We don't really know if what will be the future of altcoins or to the crypto currencies so investing is really your own choice at your own risk because it is really hard to predict if what will happen next to the crypto market whether it will go up or it will continue to go down so if ever you will invest make sure that you will be investing to something which has a big potential.
Knowing the right project and understand every possibility of growth will give you good chances, there's a lots of coin project from this industry and choosing is one thing that each investors needs to focus , if you already have full understanding and you got a good instinct that the project will work
or there's real usage taking the risk can be profitable after the success of each project that you choose.