Sure, if you're living in a PG movie.

In reality they're bullies because they like conflict. It empowers them. If you try and stand up to them it threatens that empowerment... and in my own anecdotal experience, they will fight to protect that empowerment. And that's starting from a position where their morale is high and yours is low... dangerous fight for you.

I wasn't safe until puberty finished and I was figuratively twice their size, reliably kicking their asses in said fights.