Wisdom Tooth. What the heck?

So it's been four days since my wisdom tooth decided to erupt and it's killing me. Yeah. The pain is excruciating. Seriously!!! Every night, I cry myself to sleep. Lol. I can't eat, I can't talk, I can't even swallow. That is just extremely terrible. So this is what the babies feel when their teeth start to come out? Poor babies. Anyways, I can't deal with the pain anymore so I took a 500mg pain killer and I'm still waiting for the effect of the medicine. *crossing fingers*. My left cheek is swollen and I have bad mood. All these because of the unwelcomed eruption of my wisdom tooth. So what hell is the wisdom tooth for? I read online that wisdom tooth is unnecessary. But I don't wanna go under any surgery or anything synonymous to that. Like NO WAY. The thought of it makes mouth go numb.