Upgrading from DVD to Blu-ray. Is it worth it?

[The Great Owl]

Of the 205 Blu-rays in my collection, 196 are upgrades of DVDs that I used to own.

In every single instance, the Blu-ray picture quality has exceeded the DVD picture quality.
Every single instance. Without fail.

Even the Blu-rays in my collection that have scored unfavorable reviews for picture transfer (Near Dark, The Last Starfighter, Clash of the Titans, High Fidelity, Planes, Trains and Automobiles) have turned out to be much better-looking than the DVDs of the same films that I used to own.