i try to complete the story mode on every game i have, and end up doing it on 95% of the modern games i buy. older games i might not end up finishing though.
there are a few that i'm annoyed i haven't finished yet:
MGS3 - i can't get into it. maybe its the constant reloading because getting seen sucks so much.
MGS4 - have to beat 3 first, must beat 3 first...
getting 100% though... usually too much effort, and if it has MP, forget it.
although i'm going through an older game again, i'll often try to find all of the secrets i didn't get the first time through.
there are a few that i'm annoyed i haven't finished yet:
MGS3 - i can't get into it. maybe its the constant reloading because getting seen sucks so much.
MGS4 - have to beat 3 first, must beat 3 first...
getting 100% though... usually too much effort, and if it has MP, forget it.
although i'm going through an older game again, i'll often try to find all of the secrets i didn't get the first time through.