YANBU, at all. DP and I are currently wrapping our heads around the fact that we will never have biological children. We would definitely like to adopt, I've always planned on adopting, even when I assumed that I could give birth to a child. It's not an easy answer though, as is often blithely suggested on here. And right now we are in no place to even consider starting the process.
I agree completely with scottishmummy and AF. You don't want to be told that 'miracles can happen'. Or 'what's meant to be will be'. I got enough of that shit after each of my miscarriages. And, although I know people are trying to be kind, the whole 'oh think of all the lovely lie-ins, boozy nights out and holidays you'll have' pisses me off, too. Like it's compensation for never having a child. It actually angers me, because really, how many parents look back on feeling their baby kick for the first time, holding a newborn in their arms, watching their child take their first steps, starting school, becoming adults and having partners and families of their own, and think, 'oh actually, I'd have given up on all that to have more nights out on the piss'?
Likewise, the 'you get to be a great aunt' stuff. I am a wonderful aunt to DP's nieces and nephews. My own sister and her DH are TTC, so hopefully I'll be an aunt to their DC in the next year or two. And I can't wait for that. But it is so not the same as having DCs of your own.
I hope this hasn't upset you, OP. I just want to let you know that I do understand what you are feeling.