It depends… alone like there was an apocalypse? Or alone like your loved ones have deserted you? Either way, I can’t imagine it would be a good feeling.
Completely alone? That would be crazy! I would freak out I am sure and try to search for others. I’d be sad about not having my loved ones around and try to figure out what happened but at the same time for at least a little while it might be cool imagine being able to be fully free and get everything that you want and do whatever it is that you feel like. Wouldn’t want to endure it but I would try to make the best of it.