It is indeed, mate. I find air museums a bit melancholy. Here are these magnificent things, designed to fly ferchrissakes, and make noise, and move, and be alive, and they're just sitting, dead, inert, voiceless. It's like taxidermy.
It's sadder yet if you can get inside one. They still smell like old airplanes. You get the sense they want to go, but their time has passed, and so they sit. They're denied their purpose. I like air museums a lot, and visit every single one I can, but I've come to think of them less like zoos and more like mausoleums. You can see the thing, but not what it does. Breaks my heart.