Al, Oshkosh is about the most family-friendly venue on the planet! There's something for everyone. Look at the airventure.org site for KidVenture - but I don't know your kid ages or even if you have kids. Some spouses love it, some really don't. I would guess that the vast majority of attendees bring the family. There's forums and activities for all, including craft tents, etc., if someone's not into airplanes. There's even buses that will take you over to the outlet malls or other tours if they need a break.
I used to attend Oshkosh solo from Saturday PM thru Wednesday. The first time I took my wife, she made me extend our stay (we use the dorms) for the full week the following year.