Sure, it has its challenges, but we always thought sharing a room with a sibling would've been fun. We found a few inspiring ideas for shared rooms over at Real Living.
There are definitely ways to make sharing a room easier. For example, marking out private space in a fun way like the racing stripes above. Other ideas: using bunk beds, making the bottom bunk more appealing by making into a nook/fort. For girls, the article suggests matching twin beds and one striking piece of art rather than overwhelming the room with lots of pieces.
Would you consider having your kids share a room even if you have the space for them to have their own rooms? We would!

Shaw's Original Fir...
We are about to bunk our 2 kids- 5 yo girl & 3yo boy. They have been sharing one room since the summer, with one in the single bed & the other on the crib mattress on the floor. They swap beds each night! We are looking for a good bunk bed eventually... but alas, other house projects have taken priority! This post is giving me good ideas to really make the room a fun place for them to play instead of just throwing a bunk bed together & calling it a room. Hmmm... thinking cap on!
Having shared a room with my little sister growing up, I gotta say it wasn't at all fun. Perhaps it's because we didn't always share, but were thrown together when older. At any rate, I'm a neatnik, she's a packrat, which led to some rather epic arguments. She also stole my clothes.
Which is to say, if we have enough space, each child will get his or her own room.
We've got no choice...if we have a second kid, they will share. But I lived in an upper bunk one summer and I hated it, so beds for everyone!
My boys share by choice, but it's not a very stylie setup at the moment. I like the idea of the bottom bunk as fort. Thanks.
That purple room is gorgeous!
Our two girls, 6 & 3, share a room and a double bed. Although we have another tiny bedroom, it currently serves as a guest room/sewing room. I think having the girls share their room has worked well so far. Although there are plenty of squirmishes, they usually are cuddled up together when they finally go to sleep. When they are older we will probably give them their own rooms.
I have plans to eventually purchase a smaller home. The home we rent is huge, a time suck with cleaning, and energy suck. I never thought I would have my girls share a room because they are 7 years apart. However, they are presently sharing a nice size room, and my oldest loves having her baby sister in there. We shall see how it goes when the oldest turns 13. Who am I kidding? 10.
there is something so great about a pair of twin beds ... the symmetry, maybe?
I did have my boys, 2 and 3 years old, in their own rooms but we realised they both slept better with someone else around. We are in the midst of decorating their rooms and have put them both in the same room and made the other room a play room, which has solved the problem of toys taking over our living area.
my boys will always share a room, that just comes with having triplets when you only expected to have one baby, and only had enough housing for one. :P when the time comes from them to move out of their cribs, i'll definitely need some ideas on how to set up and decorate their "big boy" room.
All four of my younger sisters shared a room for about 10 years. They are 10+ years younger than myself (we have 2 brothers in between who also used to share a room). I had a small room to myself (but shared with my brother, nearest me in age, when we were little). Now that myself & my brothers are grown & moved out, my sisters are divided 2 & 2 in two large rooms. The 2 older ones (18 & 20) love sharing their room & the same bed (even though they don't need to). The younger of the 2 isn't sure what she'll do when they no longer share, since they've been sharing space since they were toddlers.
I plan on having my kids share rooms, even if we have the space. I think it provides an opportunity for parents to teach sharing & having separate rooms all your childhood makes sharing space with room-mates & spouses later on, a big adjustment. I'm all for equipping kids for their future lives by helping them share spaces!