Hmm if Pokemon was real, you would have to think realistic. How often are you going to find a random Ho-oh flying around your house? >_> These things are sacred people. :P
Anyway, if it were real, I would go on a quest to catch most, and raise them, and train them, and just have fun. I'd also like to go out and help people/the world. There would be many fires, so a good water type would be nice. :P
But also if it were real, you would probably have some moron send out his Tyranitar, and crack the earth in half. Then we'd all be dead. :)
So, making Pokemon real would be fun, but nerve-racking at the thought of a moron destroying the earth. :P