Upset, rant

Ok so i know to some this is going to sound selfish but im angry and need to get it off my chest. Baby due in 5 weeks and my husbands dad and stepmum just dropped the bombshell they are moving hours away. Im kinda feeling sad for him and our baby that grandparents wont be nearby- i know he is going to need support during this time of great change. I think the reason im most upset is that they always said they would help out with childcare while i work / babysitting. Also, both my parents have passed away, my mum only 2 months ago, and now this little one is left with no grandparents nearby. They seemed so excited about having grandchildren, and now this from no where. I know they need to do what is right for them and there happiness, i just figured having grandchildren nearby was part of that for them. My husbands brother moved away last year too, so he s left with no family other than us around, feel so bad for him as at least i have a sister i can rely on