

As a general rule you can have versatility, or efficiency but not both.
You can have legible coding or efficient coding but not both.
Memory is comparatively cheap, which means labor hours is comparatively more costly; so why spend time optimizing when you can throw together bloated boilerplate frameworks and packages?

Relevant documentary on The Science of Touch I watched a few years back. I think they mention force and speed matter in stimulating oxytocin.