Question for Freelancers: To Share or Not?

Quick question for all you freelancers out in the audience (or just readers with an opinion and logical reason for believing so):

I'm working on a query which requires me to interview a source for background info (for the query and subsequent article). I've heard from a few (writers and non writers) that I should share my final draft of the article with the source before publication.

I've used lots of quotes in my other freelance articles but never share prior to publication--we all know how editors cut, rearrange and sometimes alter the writing before it hits print.

What do you think? Opinions welcomed.

Beth