Indeed, what else?
I'm not advocating for any specific coin. I do like monero, if that's relevant to you, but I'm sure they have issues as well.
What I am saying is, since we don't know "What else?" exists or can exist, taking the position that "nothing else should exist" is a certain death sentence. Evolution, you know. Without natural selection, you suddenly realize that you are not the gods of the earth, but the indigenous tribes of south africa. You realize it when the spanish come.