I don't think anyone should co-sleep or not co-sleep because of what others say, you have to do what you are most comfortable with.
The thing is, people don't co-sleep despite a desire to do so because of the naysayers who say it will either kill their babies or that it creates dependent children ( like they aren't already dependents and as if they'll stay that way forever...DS still comes in with us and you couldn't get a more independently thinking 3.5yo!). How can you come to a proper conclusion about how you feel about co-sleeping when there is misinformation about it and a lot of 'authority' about safety standards for baby equipment like cots, prams and other 'mummy replacements'?
SIDS is a Western phenomenon (as with depression and some other symptomology we assume are universal), so what's missing from or what's present in ours that can help us beat it?