Thanks for your response. I guess the main reason is I like the flexibility that InDesign gives me. Not all of the titles I make are subtitles either. I usually create the subtitles in one Indesign file and all other titles in another file. My client often asks me to make changes to the font size, color and overall design during a preview. Being able to make these changes, and as is often the case unmake these changes on the fly is a necessity.