What DPI is normal?

I'm curious to know, what is considered a normal DPI (Dots Per Inch) when it comes to screens and displays? Is there a standard DPI that's widely accepted as optimal for various use cases, such as everyday browsing, graphic design, or gaming? Or does it depend on the specific needs and preferences of the user? It would be great to get a clearer understanding of this technical aspect, as it can significantly impact the visual quality and overall experience.