Cosleeping

What is your opinion on co-sleeping in the same bed with your newborn? I hear so many things about SIDS and parents rolling over on their babies but what IF you are safe about it, you are a light sleeper who doesn't move and is aware their child is there? We don't use blankets, no excessive pillows or things in the bed. This is the only way my 5 week old will sleep longer than 30 minutes. He will sleep 2-4 hours this way as opposed to in a bassinet or pack and play. Do you co-sleep? What's you're opinion?