As I pressed the private switch button at the very top of Firefox android, I realized how powerful it is, to be able to switch to completely different environment isolated from my current environment. It takes away the need for installing multiple browsers.
And we can also switch between tabs very quickly.
But I really wished if data (tabs and session) can persisted and we can have multiple buttons (maybe 3 or 4) for multiple work spaces (eg. work vs study space).