I use Google voice exclusively. It allows me to have a phone number separated from my service provider which I probably won't have forever (so I don't have to worry whether I'll be able to port my number over). It allows me to make phone calls from my computer for phone interviews and the like (headset/mic so I can type). It also allows me to text people without paying Verizon a dime for bullshit reasons.
I use GV in exactly the same way for exactly the same reasons. I just seamlessly "ported" from one wireless provider to another a few months ago. Unlike "real porting" I could use both phones while I was getting things setup and switch my inbound call routing back and forth between the devices at will.
This article is just some hipster douchebag's whiny blog. I tagged this slashdot headline as troll.
Of course, you *do* have to worry that Google is planning to subsume Voice into Hangouts. That decision is so obviously retarded it can only have something to do with Google's attempt to make Plus get traction. Oh, and maybe someday GV will support MMS. It's annoying that those messages get blackholed.