Earlier quoted context omitted.
(Edited to clarify my intended meaning) > I'd happily trade places with one of my childless coworkers right about now. For those childless co-workers that wish they could accept the other end of this deal, this phrase is both common and quite painful to hear. Please consider not using it unless you really mean it, which you don't, as you actually wouldn't give up your kids for anything.
It wasn't meant with malice nor any intent to cause negative feelings. I think it's not really possible to say anything at all that won't possibly distress someone out of all the possible readers, so I just try to keep my intentions good and avoid the obvious gaffes. In this case it's just a figure of speech.
Imagine you're blind.
Now Imagine a sighted person tells you that they've just seen something so ugly they wish they were blind. You might be a bit upset at that notion no?