We think the time you may spend once
to download and install the Populator is much less than creating even a few user profiles (complete with avatars and covers) and then have those users create some groups or events.
Now, what about when you need to delete those users and recreate them? Will you recreate them manually? With Populator you just press some buttons.
And why limit yourself to only "a few" users, groups and events anyway? Why not having a more realistic situation?
So our question is, why should you bother creating users, groups and events manually?