My dh is pretty much always looking to do a family type thing on the weekends, so I just don't grasp this guy blowing it off.
I certainly wouldn't blow it off as "men are clueless". I'm more inclined that OP needs to be more specific with her expectations or he just didn't want to do a family day. I don't believe he's some kind of idiot that got lost in a haze of hair cut hunting.
OP, it's important to have a face to face discussion about stuff with some couples (me & dh included!), if you speak "generally" you can be sure of one thing, in general you will be disappointed.
DH and I have to be very specific, and I like to include reminders, so we make sure we are clearly communicating to each other.
I'd like to think it's all HIS fault

, but I really think that sometimes I suppose he can read my mind and I'm not as clear as I believe I am.