No it doesn't. Using compositional rules as rules rather than guidelines will

Before you start shooting in RAW, you need to take a few more things into consideration.

Some would say real photographers only shoot in RAW. We say "meh". It depends on what you think you may want to do with your images.
Let's back up for a minute and talk about what RAW is. First, not all cameras are capable of shooting in RAW. So this may be

One great photo pays for years of bad ones! --NYC Photo Safari

ALWAYS? Always and never are a really long time. The question begs "why?" What's wrong with shooting in jpg? The format is there for a reason isn't it? What if you are shooting with your smartphone and can't shoot in RAW? Does it mean that you shouldn't shoot at all? What if you are a blogger and just want to be able to quickly get your images onto your website? You should shoot in the format that makes the most sense for you.

And for those of you wondering what RAW is and why you would use it, watch for the upcoming series of posts all about the RAW format.

NEVER? Never is a very long time. It is true that we are deleting too many of our photos these days, but should you never delete anything? Probably not, although that is a lovely photo of your shoe. Take more photos, delete mistakes, and keep the rest. A bigger mistake would be keeping your camera inside of your bag.