Plants vs. Zombies

At first I really didn't like the game...I thought it went too slowly, and I got bored sitting there waiting for the zombies to just die and for more sun to fall from the sky. So I stopped playing...it's midterms week, and I have a lot to do. But then I got bored studying, and started up with the game again. I was still bored until...cherry bomb. I don't know why, but I kept playing with the sole purpose of collecting 150 suns to blow up those damn zombies and reducing them to black ash. I sat through the boredom of 8 or 9 levels just so that the "massive wave" of zombies would attack at the end of each one and I could destroy with my awesome cherry bomb plant. Other than that, to be honest, I can't say much about the game. I can't see how it's significant in the broader scheme of things. I understand that online computer games (even simple ones) brought about a new way of interacting online, but I just don't see the merit of this one in particular.