I use it because it's faster and it makes making changes later easier. It also allows me to leave the app mid-feature (happens a lot as I do more than just code

I use it because it's faster and it makes making changes later easier. It also allows me to leave the app mid-feature (happens a lot as I do more than just code) and comes back to it without having to load the whole app into my mind again. If I get my specs to pass then the app will work. Simple.