Co-Sleeping...Yay or Nay?

Imagine this. It's 7am, your snuggled in your nice warm bed, you roll over and hear the cute, innocent little voice of your 3 year old whisper "Good Mornin' Momma!" Yeah, it instantly puts a smile on your face, how could it not. But to have this happen every morning, it starts to get old.

Yup, we've fallen into the trap. We've become weak parents and every night our 3 year old, quietly climbs into our bed. I've read in some mom forums that some parents are all for this, they believe it is best for the child and parents. I don't see how getting kicked in the side, head butted or slapped at in the middle of the night is good, let alone what it has done to our sex life.

When my brother was a young child he slept in my parents bed til he was almost 5. Noooooo! I will not let this happen! But what steps do I take to stop it? He's so quiet and sneaky that some nights I don't even hear him come into our bed. And the nights that I do hear him, I immediately take him back into his bed, but some nights I don't have the energy to go through the tantrum of putting him back in his bed. He's recently been telling us that he's scared, that he has monsters in his room (oh what TV can do to a child's mind.) And while hearing him tell me these things wants to make me hold him til he feels safe, I'm getting the impression he's learning how to work us. Little Devil

Please tell me that I'm not alone here. Are we the only family who wakes up making the human 'H'?