When at Oshkosh, I'm a volunteer, so I get free admission and camping, sandwiches for lunch if I want them. I spend $1000 on fuel flying there and back, I spend the night in a hotel in Watertown the night before that cost $200, food for me and the girlfriend adds up (beer adds up too!). All in all, I lose money to go see the best show in aviation!
I see planes, people, and aviation products I won't see anywhere else. I've met Apollo astronauts. I met Stan Lee. I met Harrison Ford. I wouldn't have met any of these people if not for Oshkosh. It's a community of like-minded people. EAA does an amazing job and tries to improve it every year. Becoming a Lifetime Member was just me giving something back to an organization that makes all of this possible.
BTW, I'm 50. I have a 182, a Corvette, a Lifetime Membership to EAA. I didn't have any of these things when I raising my two daughters and saving up to put them through college! There's a reason old guys drive Corvettes... young guys can't afford them!