Disclaimer - I know this is trivial and don't particularly look forward to a chorus of first world problem accusations, which it is. 
But I'd be interested in hearing some of your opinions.
Background is we are moving house next month into a larger place (5 bedrooms) from a 3 bed semi and have 3 kids. The bedrooms aren't huge but the long-term plan is they can have their own rooms when they get older.
The two older kids (7 and 5) want to share a room, as they did in the last house. They liked their bunkbeds. Everyone is happy with this plan as it will currently give us 2 free rooms - one can be used as an office/spare, the other as a spare. We have large families so extra room is a bonus.
Anyway. Went to look at it again today and I suggested the older two kids share the biggest bedroom (apart from ours). This is an ensuite with fitted wardrobes. The other rooms do not have any fitted wardrobes and are a fair bit smaller.
My DH couldn't believe I was considering it. He said it is for guests...that it is important to give guests privacy...that the kids will be fine in a smaller room...that an ensuite is there for a reason and that reason is guests. (For reference, we will probably have on average 6-8 different family groups or friends per year for a few days at a time).
My reasoning is that our situation is a bit different - our kids want to share so we should give them the biggest room available with the most storage space. Plus it frees up an extra room for us.
Tbh I am a bit pissed off with him being so emphatic. I think priority should be given to permanent residents of the house whatever their age, and the odd overnight house guest here and there can sleep in a comfortable double in a smaller room. But I am willing to be told iabu.
Frankly I think this stems from his mother who is all about appearances and keeping up with the Joneses.
So, AIBU?