Please forgive what may be a long post.
We have 3 ds's whom I absolutely adore. I have 2 from a previous relationship who do not see their dad ( he's a waste of space) and then one with my DH. Last year we made the painful decision to not continue a pregnancy. We had just moved into a rental property pretty much as soon as the line showed up on the test. I took the MAP and it failed. Two days living in the property and we were basically told to get back out. The landlady had taken ill long story. Anyway we couldn't risk bringing another child into the world with nowhere to live. It so happened that 2 months later we found our dream home at a bargain price still renting but we hope to buy it.
Fast forward a year and DH and I have spoken about having one more. We both feel that our youngest will feel like an only child as there is a 7 year age gap. I wasn't too sure but then on Wednesday DH cooked me a meal after work cracked open a bottle of champagne and said I really think we should give the boys just one more brother or sister. I was so happy. Then this morning he back tracks no we aren't having another we can't afford it, what if we have to move again.
AIBU to be fuming I've not spoken to him all day. Yes it would be tight with 4 children and yes in a rental property always the chance we could lose our home and there are never properties that come up this cheap in our area. But I'm a firm believer that no one can ever afford a child and I had got all excited about our big family adventures. 
Thanks if you got this far