[bikamonki]

You kill 4 birds not 2. Your clients/employer will appreciate a single codebase that costs much less, both to develop and maintain.

There are drawbacks though. For instance, Android is very limited when handling images taken from a camera activity which was called by a browser, in fact this is a documented still unsolved bug. But Google itself is promoting the concept of 'progressive web apps' so one would safely assume that the end goal is to allow web apps to be as feature rich (and as performant) as native apps.