The question isn't what can't be easily done, but what I prefer. I can compile dotnet code into it's dlls via the cli, I can set up debugging in vscode, but it's a pain. Rider is pre-setup with all of the shortcuts I like, the colors and syntax highlighting I like, and it's been my preferred IDE for years. I like hitting ctrl+shift+b to compile, all of the debug tools it gives, the rundowns, the experience is just clean for me.