You have a point there but the main topic is about if it's worth trading only bitcoin that's why I said that it's better to trade only bitcoin if you as a trader for example isn't sure about other crypto then yes it is the best option to choose only bitcoin. One more thing, it is not about if you have the skills or not. For situations like that where you don't have much skills in trading then I would also say it's better to hold bitcoin than to trade but you won't be able to become a better trader if you don't face it. When you make a mistake in trading is what makes you learn from it.