I think I am being unreasonable, so shout away.
I've got four elder sisters. Two of them have 3 kids, two of them have two. I am TTC my first.
Only one sister knows this. She is baby-obsessed, and as soon as I mentioned that I wanted a child (greatly to everyone's shock, as I've always loathed the idea) she squealed with joy and said she'd try to conceive her fourth so we can, ahem, share everything.
I'm a bit disappointed to report that I sagged inside. For 20 years I have had less attention than my sisters from my Mum and Granny because - and I think this is only natural - they have children, and so need (and get) lots of support and advice and affection and exquisite hand-crafted gifts and visits and whatnot. I know it's not precisely the MAIN reason to have a child but I was quite looking forward to having special time, with my Mum in particular, and my baby being doted on etc. (forget what they tell you about the youngest child being spoiled - my parents ignored me until I could help with the cooking and there are no photos of me as a baby, so I was rather hoping they'd pay more attention as grandparents!).
Well there it is. [Puts on hard hat, ducks behind sofa]