Maybe these are shitcoins for you, but for some who is already a newbie, smaller coins (which could be still profitable), are the perfect way to learn and start trading. People don't use only BTC, you know?
You yourself answered your question. Shit coins can be worthwhile assets only for beginners who do not understand or are poorly versed in the mechanism of the market.
In any case, it doesnt matter how attractive the asset is in fact, if you are a beginner, it is very likely that you will make multiple mistakes when working with any, even the most reliable investment tool.