Awww, I'm sorry Hawaiian Blessing It's hard to compromise on stuff like this. I think the idea of a cosleeper is a really great "at first" compromise. Studies do still show a lot of the same great benefits with cosleeping as with bedsharing -- the cosleeper right next to you still helps baby to regulate breathing, still helps baby to feel more secure and less alone, still helps to reduce the incidence of SIDS... I know it's probably not what you want to hear. I'd feel pretty crushed too if DH were saying no to something important to me.
Although, I would make the compromise for now, and hold on the possibility that it will probably change (in your favor). The realities of parenting are that it can actually be really, really difficult to keep baby OUT of your bed. You're tired, daddy is tired, you fall asleep nursing, daddy falls asleep with baby on his chest, or baby flat out won't sleep in the co-sleeper. Your DH is probably standing firm now, but at 3:30 in the morning when you've both been trying to get baby to sleep in that co-sleeper (gently, of course) for several hours, THEN is the time to gently, lovingly point out, hey, there are safe ways to share a bed.
Parents make lots of plans. I was the opposite of you! I NEVER wanted my DS to sleep IN my bed. I only wanted him next to the bed, in his co-sleeper. But as a parent, I was pretty quickly faced with a choice. I could follow my kiddo's cues and compromise on what I wanted (and everyone got more sleep), or I could have stuck to my guns and gotten WAY less sleep. In the middle of the night, I'm guessing your DH will crack and do what he needs to do so that everyone gets more sleep.
In the meantime, I'd try to start compiling some articles on safe co-sleeping for him. I wouldn't push the issue too much. Give him time to cool off about it, and try not to worry too much. I know a whole, whole lot of parents who said, "my baby will never be in my bed." And even though none of those parents are crunchy in any way, shape, or form -- ALL of them ended up having their LOs sleep in their beds sometimes.