I will confess that the first time I took a yoga class, I sat on my mat--bare of other accessories, and felt a bit of smug pride as I watched other students pick up their blocks, blankets, straps & eye pillows. I liked the simplicity of just-me-and-my-mat, and I had a deep down conviction that I was better at yoga already because I didn't need anything else.
I think many of us have this attitude towards props--something along the line of Real Yogis Don't Need Props. And, like many others, I didn't start using them until I was injured. Sometimes it takes a knock on the head to change my mind (or less metaphorically, a tweak to the psoas). It came down to a choice of not doing yoga, or doing yoga with block. And I started to like it, I got really tight with my block. And since I was already using a block, why not try a strap? Soon I was setting up with 2 blocks, a strap and a blanket every class--just in case I might want them.
Props became another way to discover new depths to certain poses, or greater relaxation. We're friends these days. Of course, I have Jasper's example as well--props are for playing!

