It seems like there have been a lot of anti-purl sentiments made recently, so I thought these might be helpful:
For Pickers (you know who you are) learning the Norwegian purl makes things much faster. This is really good for ribbing or other patterns with lots of switching. DO keep in mind that this results in a looser purl stitch, which you can either tighten as they are made, or just learn to work with a fun new gauge.
If you have ever bought a Drops pattern book, there is a note in the front about the stitch gauge being looser because of their wacky purl stitch - I believe this is this is the stitch they are using. Norwegian Purl