Have you noticed the older (or in jag's case mileage) you get that you're just too tired to care about the same things.
Remember Rock Concerts and before Internet? I use to camp at the door for tickets. Now you could tell me Lady Antebellum is playing down the street, for free, and I would ask: "How far down the street?" and "Are the seats comfy?"
Then I'd say, "Let's just stay here and watch the Discovery Channel," and add, "C'mon, it's Shark Week."