Yep. It will be more secure if we choose top altcoins. At least, top altcoins have a small chance to disappear because they already have big market caps and they have established projects. They are also listed on many top exchanges and have strong community. So, the possibility of survival will be better and the potential for growth is higher.
Yes. Makes sense and Today happened with a pretty decent hike for BTC. and others will also follow (altcoins). Well, maybe that's the allure too, sir.