How feasable is it to make the same game in Vanilla webgl vs babyon

I'm wondering if you guys have made any games in vanilla webgl vs babylon and could share your experience.

I'm having trouble getting the most basic thing to work an started looking at the webgl api.

http://www.html5gamedevs.com/topic/16554-using-webpack-to-bundle-babylon-and-using-typescript/#entry93232

Actually vanilla webgl seems pretty cool so I'm wondering why bother with babylonjs?