For me the most common reason for rendering a web page in the editor is to have a side by side view of the markdown document I’m editing. I like using mark down to write basic documentation and tutorials and not having to have a render-> open in the browser step just makes that smoother. Yes I could have two windows side by side and yes I could have file events and watch for the markdown to be saved and kick off a render and kick off the browser refresh… but I can also just open a second pane in VSCode and let it do all of that for me.