Is my life significant?
Nobody's life has exactly zero significance.
By the time you were born, you'd already used up some resources.
Nobody is going to break exactly even.
The real question you're asking is...

Hey! It beats watching paint dry!

"Hidden Mickeys started out as inside jokes among the Walt Disney Imagineers. A Hidden Mickey is an image of Mickey Mouse concealed in the design of a Disney attraction (ride, resort, etc...). Originally, it took the shape of a head and ears silhouette, one large circle with two smaller circled on top in the appropriate place, but Hidden Mickeys can take on many forms..."

Again, I'll bet I was the only person who didn't know about this until just a few minutes ago.