Are you
Magic?
Reasoning:
Some say that I simply manipulate the gullible
You can use magic to trick people.
Others think that people who use me are horrible.
Many people that people who use magic are evil
Really, who is to say, I come in many different forms,
There are many different types of magic, ranging from transforming magic, to floating magic.
Can I be only evil, or can someone control my storms?
Magic can also be used for good
Even those who claim to abhor me, use me in a way,
Really, every time they smile, or that's what they say.
(From Joe-You-Know) "Your smile is magical" is a common phrase.
Essential in most every fairy tale you've ever been told,
Many fairy tales have magic
Real or not, strong or weak, my origin is very old.
Many people do not believe in magic, but people have believed in magic for a very long time.
Extra
Also, the first letter of each line spells SORCERER, and a sorcerer uses magic.
The title is "I'll blow you away with my impressive display, because there are many types of magic, and magic can literally blow you away.