That's partially because Blender has no where near the quantity or quality of training materials for scripters that Max/Maya do. I know how to script in all three apps, and Blender was by far the most painful to learn due to the aforementioned (just because you know Python doesn't mean you can jump right into Blender and…
The no-scripts thing is a real bummer. Hmm, I'll have to think about it. Does anybody have a good ressource to get started? Hopefuly something that assumes you already have a knowledge of how to do modeling? Skipping through what a polygon is on basic tutorial videos isn't optimal, haha.
*IN BEFORE SOMEONE MENTIONS MODO* Yeah, no... alas. And stock Blender compares to stock Max in some ways but good luck finding the same variety of scripts with Blender so if like me your Max workflow includes a couple dozens, Blender just feels slow and clunky. Maya LT at least supports MEL I think. Not 100% sure.