Phonegap is nothing more than a stopgap for people that can't afford iOS devs. I can think of no benefits for the end user. It's a sloppy solution. Better off just doing a mobile web app instead.
This is pure, unadulterated FUD. If your advice is to just do a mobile web app, what on earth is wrong with packaging it up into a phonegap app so that you can access a few extra APIs?
Users have a higher expectation of quality from native apps than webapps.