I really wish it was a little cheaper to buy the digital version. I mean, they don't need to sell the physical disk, so it makes sense it should be cheaper even if it's just like $5. I've always done the disc and then I later trade them in. Think I might start switching to digital. Have always liked that $10 or so that I get on trade in.
I was strictly physical through the PS3 generation. It was easier to justify back then since the games were actually being read off the disc and downloading games from PSN took up more space. With the PS4, the game is downloaded to the HDD regardless so you aren't saving space. Once my GCU at Best Buy ran out a few years ago (20% off video games was amazing while it lasted), so did my incentive for buying physical. Especially since I had so many digital games from PS+ and great sales on PSN.
I understand the point of view of physical media die hards. I just prefer the convenience of digital, although until the PS5 has a better storage solution it may make sense to buy physical games that you may play to completion and then uninstall. That's what I did with Spider-Man Miles Morales. For The Show, digital makes more sense to me since I'll play it on and off pretty much every day.