Children sharing rooms- having another child?

[lilo0]

We live in a 3 bedroom house and have two DC, DD who is 4 years old and DS who is 20 months, they have a bedroom each. We've been thinking about whether to have a third and both me and DH want to but he's not keen on having DC share a room. This is difficult because it's unlikely we'll able to afford a house any bigger. DH thinks it would be unfair, especially as they get older and need their own space which I understand but I wouldn't say it's absolutely necessary for children to have their own rooms and they might be fine with it

I have a poor relationship with me sister and we genuinely didn't get on from start. I would have really struggled to share a room with her, having my own room was the only time I got to escape her (she wasn't violent or anything, we just clash!) I seriously doubt it would cause any real damage to them and I'm sure lots of kids would love it, but there's no way I would consider making them share.