When you're on a set it can be very tedious and slow. It's just not as big as when you see it on film.
I love talk shows and hosting. I would want to do something like that. I'm not sure I would want to be a reality star continuously.
I would fix other people's lines if they asked me on occasion. The hard part of writing is the architecture of it, getting the story and structuring it. Not the tweaking of lines.