For some reason I have found myself purchasing PS1 games on PSN for my pspGO and PS3...even the games in which I still own the original discs. I mean, spending five bucks here or there for PS1 games doesn't seem to bother me.
So far I have bought:
Metal Gear Solid
Resident Evil 2
Resident Evil 3
Final Fantasy VII
Final Fantasy IX
Parasite Eve
I am soon going to be purchasing:
Final Fantasy VIII
Final Fantasy Tactics(The remake for PSP had way too many lag issues when I owned it before I sold my psp3000 to my uncle.)
Resident Evil Director's Cut
Symphony of the Night(I could get the PSP Dracula X Chronicles or whatever but then I could only play on PSP/remote play).
However, when it comes to Nintendo's Virtual Console, I did not like spending the same amount for NES and SNES games. I still own the cartridges and systems but paying $5-$10 for what I own on cartridge that is older than PS1/N64 seems foolish.
Then again, purchasing PS1 games I already own is just as bad.
Now, if they would just release Chrono Cross and Final Fantasy Chronicles on PSN
...(Though I still own Chrono Cross on disc. Great game.)