I've turned off the automatic updating of apps on all my Android devices, because my life is better that way. These days the bulk of "What's New" lists are "bugs and performance enhancements." If the software is running bug-free for me, and fast enough, then I don't need the update.
As with any software, updates are not necessarily better. Some introduce ads, even after I pay for the ad-free version. Others badly screw up the nifty user interface into something that's slower and unusable (here's looking at you, Opera v42 for Android).
About the only updates I'll do are for CAD apps on my tablet, as they are still progressing function-wise.
To turn off automatic updating, go into Google Play, select Settings from the hamburger menu, and then turn off Auto-update Apps and App Updates Available. In any case, Google no longer updates Android on any of my devices with security patches.