Digital sucks imo. Despite Yakuza being one of my favorite on the PS2 and PS3, platted both Yakuza 3 and 4, I refuse to purchase Yakuza 5 on the PS3 until it's $10 or less because it's digital only. If the game came out at retail, just like Yakuza 3 and 4, I'd have purchased it day one at $60.
I'lll rarely buy digital, but when I do, it's very cheap. I'm patient enough to wait for the flash sales for however long it takes. Even though I don't like digital, there's also convenience, and any time a favorite PS1 game hits $3 or less, I'll pick it up. PS2 games go on sale but I don't bother, they can only be played on the PS3, and in that case I can juse use my disc. Can't use the disc for the Vita and don't have to go through the hassle of creating an eboot file on the PSP. Anything before the PS1 though, I'll emulate on my PSP if I want to play it portable.