Why hasn't Jurassic Park happened yet?

When is Jurassic Park going to really happen?  I know all you nay-sayers out there are going to use your "logic" against me but I can't stop thinking about how awesome it would be.

I really love dinosaurs. Forget cloning sheep or making robots that will one day take over mankind.

Dinosaurs are cold blooded so the could definitely survive global warming.

 They also have very small brains so the chances are less likely that they will take over mankind.

Dinosaurs are very good dancers.  Although they only know one song.

They love to be helpful.

Such as providing shade

And scaring off intruders

They are huge fans of the arts and sciences

Probably the most provoking argument

Everyone deserves a second chance, even dinos.  Come on,look at those little arms