Physical Pros
+no credit card required
+easier to acquire for people with bad internet
+convenient for console gamers
Physical Cons
-breakable
-not as convenient for pc gamers
Digital Pros
+convenient for pc gamers
+extremely easy for people with good internet
+steam
+cant be broken
+mods
Digital Cons
-not as convenient for people with bad internet
-huge download for console gamers
Verdict
Physical - good for console gamers or pc gamers with bad internet, or no credit card
Digital - good for pc gamers with credit cards
Personal Opinion
As a pc gamer with good internet connection and access to a credit card, i enjoy digital download so i am a frequent user of steam. if i must use a physical means of downloading games though i support usb because it is more universal and most computers have usb drives, and some computers do not have disk slots, plus plugging in usb sticks makes me feel so cool