YAVP is not meant to compete with any of the big players like VLC or MX Player. That being said, here are some reasons you might want ot use YAVP:

YAVP is fully Open Source
YAVP will (and cannot) spy on you!
YAVP is completely free without Ads
YAVP will play most Video and Audio Files aswell as Online Streams
Modern and Intuitive User Interface with Swipe Gestures for Volume & Brightness
Resume where I left- Feature (if the App should crash, you can just resume watching with the press of a butt