I probably am I know.
I have a lot that people would envy - really good job that I enjoy (and pays well, albeit I work hard for it), a lovely home in a very good area, enough money that I can buy treats for me and the DC when I want/replace household stuff without worrying about the cost, my health and fitness, 2 DC, friends.
But I want a partner and another child. And it's basically too late (I might have another year or so's fertility left, but nothings going to change in that time!).
It's not like I haven't tried, I've had some short-term romantic encounters over past years, but none that developed into anything serious or long term. I could've had a baby on my own, but I've already done that twice, and I wanted it to be different this time.
I know several women who divorced/separated within the last couple of years (when I'd already been single for a fair while) and they are now remarried, with a baby (or in one case, 2) and yet I'm still in the same position. I just want a family (and yes, I know I already have one with my DC, but I want more than that) and it's not going to happen.
I've just walked past the local day nursery, and felt tears welling up seeing all the parents collecting their DC. That should be me, but it won't be.
This (as my life is) isn't what I want. But I can't see how I can change it, certainly not in the time I have left.