I really hate mandatory co-op... but co-op itself is a great feature.
Some games don't need it (cough, bioshock 2, cough) but some games really shine with local co op (gears of war 2). It's a tough call because it's clear so much of RE5 was designed for co op play... when I was living alone, I hated it (online 1 + 1 co op blows, so that's not even an option) but now that I'm moving in with one of my friends, co op becomes awesome.
Some games don't need it (cough, bioshock 2, cough) but some games really shine with local co op (gears of war 2). It's a tough call because it's clear so much of RE5 was designed for co op play... when I was living alone, I hated it (online 1 + 1 co op blows, so that's not even an option) but now that I'm moving in with one of my friends, co op becomes awesome.