Writing prestige and resultant wealth definitely would change me...if I let it...and that's why I don't actively seek it. If it comes my way, I don't want to change other than being able to support myself more adequately, but staying me would probably be very difficult.
What it would change is my lifestyle and those in my life.
Writing itself is my joy. If I sought what it could bring me, I'd have been in New York, Chicago, LA, or somewhere else in the world since high school graduation, for better, or worse.
Writers who say, "I hate writing, but I love to have written" are seeking the art's potential benefits. They aren't heart-of-heart writers who possess the joy of writing.