Keep in mind that Avid pretty well invented non-linear editing, way back in the early 90s.
Keep in mind that prior to FCP Avid was 10x the costs with 1/2 the functionality.
It wasn't long ago that a lot of Avid systems set in the corner while full time editors cut on FCP.
Now, I'm not pushing any Apple product and Final Cut really needs to step up, especially in rendering speeds and overall functionality (then again Avid and every non linear editor could use some work, but without FCP on the scene Avid would probably look whole lot different.
Now that we're working in files from 2k to 5k, it's important that some software step up and take over some of the load.
Raise your hands for the functionality of color correction in Lightroom to be applied to digital video.
But regardless of the above, if your going to be a full time editor, yes Avid is probably the standard to learn, but with Avid's keyboard workflow classes would also be a given.
If your just going to knock out a few videos, then Premier or even FCP (cobwebs and all) will work just fine.
P.S. Raise your hand for more than one company to get together and set some real standards for file formats, editing on and off line, grading and delivery.