Geez, people.
Superman, of course.
I’d like to be Q from ST:TNG. All the power of God and none of the responsibility!
Elizabeth Bennett
Jo March
Kate (Sheffield) Bridgerton
Lazarus Long.
Think of all the adventures this guy has lived.
The Watcher, from the comics. He may not be able to interact with the things he experiences, but he’s seen lots, and he knows what’s out there.
Harriet Vane. Well-educated, witty, and, best of all, beloved of the brilliant and endlessly amusing Lord Peter.
I’d be Doctor Noonian Soong, Data’s creator/father on Star Trek.
Q is also a great answer. I'm surprised no one has picked Homer Simpson yet.
Other good answers : Zaphod Beeblebrox or Ford Prefect, if for no other reason than to meet the triple breasted whore from Eroticon 6.Oh, damn. Why didn’t I post that first?
Oh well, at least I get to solve one mystery. I was wondering how well-versed in obscure biblical harlots you had to be to come up with that screen name, but it’s just become a lot clearer 
I am a fictional character. You may even be able to look it up.
Oooh, maybe I should change mine to Kinsey Milhone. At least she’s getting laid every once in a blue moon.
God.
Or bugs bunny.
Amélie Poulain
Another vote for God.
I’ve always liked the reluctant hero and the “every man” hero so I’d go with:
John Yossarian from Catch 22
or
Bruce Willis’ character from the movie Unbreakable
[Joshua* voice] What’s the difference? [/J*v]
*you know… from War games
Ash from Army of Darkness.
Radagast the Brown
Its definately gotta be Tony Green_bladder. Think of all the great things: spending days and nights at a strip club, hanging out with Paulie Walnuts, all the really hot girls he has (hell even the one-legged Russian is sexy), cool house, and just knowing you’re a tough badass.
Course, there’d would also be feds, and hostile gangsters, Janice and Meadow to deal with, but hey, nothing’s perfect.
Little Cat Z. I need Voom. I need it now.
TV- Patsy Stone frim Ab Fab
Movies- Stitch from Lilo and me
Literature- Morgaine from Mists of Avalon