At least with vim/emacs you have certain stability and proven record that they'll be around in 5 years and all the time you invest in it will pay out. For vscode, who knows what the next most popular editor will be in 2-3 years? But then again, these editors are easy to pick up. I think if vim or emacs intrigues you, you should go for it and try it out for at least a week or so.