I guess its good to invest now using your ETH because of the low price of the crypto coins right? But let's also consider the fact that it's a big risk when joining unknown ICO.
You are absolutely right! Before investing, you should thoroughly study the idea of this project in which you want to invest your money. Secondly, you should not invest all your money and not credit! After all, it is not known what will happen to the project, this is not known at the first stages of ICO.