@Rainbunny
OP - I do understand your fear about somehow "damaging" your relationship by sleeping in a separate bedroom and it still seems a bit taboo to mention even these days, especially since we haven't been married more than 5 years, mid-thirties. The funny thing is though that when I have opened up to a few friends and been honest about how much better my sleep and therefore my health and my marriage is due to us sleeping apart, I have been surprised to learn that my friends are either doing something similar or desperately wish they could! I think there are many more women quietly realising that sleep is important enough to start being a bit more selfish about it (as we should.)
This X 100. And I also believe that deep down, many women would LOVE a separate bedroom! (If they don't have one already...)
Sleeping apart from your spouse is still a taboo subject, and I really don't know why. I know older relatives (born before the 1960's) who think it's shocking for a married couple to sleep in different beds (they also think it's shocking for a NON married couple to sleep in the same bed!)
There is this assumption that you have problems in your marriage, you don't have sex anymore, there is no intimacy anymore etc etc... If anything, when you sleep in separate rooms, and are getting good sleep and rest, the relationship is better. How can you possibly find a spouse attractive and appealing intimately, when they keep you awake all night with their snoring and rolling around and farting and grunting? Very sexy. NOT!
I know several couples (over 70,) who sleep together in the same bed, and the husband snores like a bloody kango hammer, and the wife complains every single day about it, yet refuses to sleep in one of their THREE spare bedrooms because that's not what married couples should do.....
Batshit. 
It's time this daft taboo was consigned to the history books where it belongs. I LOVE my bedroom. I can sleep blissfully for 8-10 hours straight through, I can read several chapters of my book, I can watch a netflix show on my laptop - all in peace, on my own, and in my own snuggly bed, then go to sleep when I want.
As I said earlier, me and DH have a perfectly happy marriage, a decent sex life, and a close relationship. If anything, having separate bedrooms has improved our relationship, because we are both so well rested, and have our own space. I do actually find myself feeling a bit sorry for women who have to share a bed with their husband. I would literally not be able to do it now. Ever. Not after more than a decade of having my own bed (and bedroom!)
@Smiler0206
Thanks all. Last night I spoke to my husband about how much of a problem this is getting and told him I'm thinking of getting a bed for playroom. And he felt really bad and had no idea of his sleeping habits every night but happy to say that i took an extra blanket to bed and he slept vertically all night last night. I had the best sleep that I've had in years and he even got up with the girls this morning and left me to stay in bed. Feel so much better already for having a full nights sleep.
GOOD FOR YOU! 