OP here. I do have a little one, and the majority of these friends do as well. I think it's very possible they thought I would just say no and decided not to ask. I'm actually okay with that and understand it, but it still hurts that they'd talk about it within 5 feet of me without even asking if I was interested, and to a lesser extent sound off about it on facebook.
I'll get over it. Focusing on spending a relaxing weekend with my family.