I'm hotter than anything else in the world;  

I'm brighter than everything around me.  

I'll burn you if you get too close,  

But still, you know how to tame me. 

Undesirable as I may be,  

I'm vital to preserving life.  

I'm not sure if you'll guess me right  

After all, I'm not who most think I must be. 

> 
> **What am I?**  
> 
> 
> 
> 

Hint:  

> 
>  The answer is natural, not artificial.
> 
> 
>