Positioned between the skateboard and the rider's feet, grip tape makes all the modern aspects of skateboarding possible. Similarly, Griptape.js sits between the blockchain and the modern web2 frameworks that every modern developer knows and loves. Although it is possible get off the ground without grip tape, it is really hard and doesn’t make much sense really. Similarly Griptape.js gets you off the ground quickly and easily. You could build without it, but really, what's the point?