With DD when she was new XP left us to sleep in the spare room because we were "noisy and annoying keeping him awake" - he was NOT helpful at night! However at that point she wasn't truly co-sleeping, because she was theoretically in a cot next to my side of the bed, but he objected to the fact that for the first few weeks i had to put the light on and sit up to help her get onto the breast well. I did once pull the same stunt on him when i was literally seeing things that weren't there due to exhaustion - got a great solid 4 hours which set me up! We broke up soon after (nothing to do with sleeping arrangments, had been on the rocks a long time and refusing to see it).

With DP now we have only co-slept all together a handful of times because he's only here a few times a week, but when we do nothing "happens" to him. We only have a 4-foot futon actually, so it can be a squeeze! Basically DD stumbles in in the middle of the night and picks a side to get into. She once or twice has gotten in between us, but generally she gets in the outside next to one or other of us. Whoever is closest to her snuggles her in and we all go back to sleep.

We actually love family cuddles in the mornings and she ALWAYS gets in bed for those, but i have to be honest, we're in the process of moving in together and top of the list is a super-king-size bed to fill with babies - it really IS a squeeze with 3 of us in a 4' bed!

So co-sleeping is something we do and plan to continue to do with future bubs for the following reasons:
- lack of sleep IME causes far more agruments moods and upset than lack sex-in-bed or sleeping-together. I wouldn't mind DP having the odd night to catch some zzzz's when we have a baby, because his work is high pressure and highly intellectually demanding, so if he's over-tired he's useless, and it's his wage which will allow me to be a SAHM. And i found it really DOES mean a better sleep if bubs is close to me and doesn't need to cry or fuss for me in the night.
- i find the better connected i am to my DD the better she behaves and the more fun we have together. I put a lot of this down to the bodning time we've had co-sleeping and baby-wearing, because i had to wean off the breast at 7 months so BFing was no longer available bonding time. I know lots of babies who will bond during bottle-time but unfortunately my DD wouldn't have anything of that - if she was getting a bottle SHE wanted to hold it and SHE wanted to feed it and SHE wanted to have it while she was still having fun and learning - if i held her she'd grizzle and refuse to take it anyway.
- we tend not to have much sex in the bedroom anyway - we have polenty of sex, but the bed is an occasional venue rather than staple stuff, so it doesn't affect our relationship that way.

My experience with DD was the the first 3 months are to be enjoyed AND survived. And if surviving with our tempers and relationship intact means we spend the occasional night in seperate beds, well, i'm ok with that.

HTH

Bx