[infinityplus1]

It is for the same reason people prefer to sleep or hibernate there PCs instead of shutting them down. You don't want any breaks in your flow. Closing tabs and opening them again from bookmarks is annoying.

I keep tabs like production and development Firebase console, Github, Gmail, Trello, Slack, Google Cloud logs, documents/spreadsheets, Google searches, documentation/articles for features/bugs etc.

It makes my work faster since I everything I need is always available in the tab bar. Feature/bug related tabs are closed only when they are fully done and deployed to Production.