Existence has always been fraught in violence and chaos. Life is brutal. Self-awareness is a terrible burden. No one gets through life unscathed one way or another, and the burden on the planet's animals and the environment perhaps the most appalling of all these minuses.
From this perspective, it feels almost morally right to wish none of 'it' had ever come into existence, or more simply, that existence was never a thing. But here we are talking about existence and debating its value, which paradoxically makes the question moot.
Personally I think there's much about existence that can be beautiful and interesting. The challenge is possessing the mental, physical, and material resources to be able to engage life in a way that allows you to appreciate and foster the good and mitigate the bad. That's my two pennies for what it's worth.