Maybe once a month? Or the entire trilogy once every 2 months?
I watch with my 2 daughters. Once we watch one of them, they usually beg for the other 2 to be viewed in the next week or so. We watch the GOUT. Before that it was the Dr. Gonzo transfer, and before that it was my own edit from a FS VHS set. Since my eldest at the time was a bit young, i edited out things like smoldering aunt & uncle, some of the wampa, Han being tortured.... things like that. She also didn't like the emperor, so i edited out nearly every close-up of him. Surprisingly, his dialog was well-divided between distant shots and close-ups, so the story could still be followed! Anyhow, I put all three on a single VHS in SLP mode (!), and even put the Boba Fett HS Nelvana cartoon on there between SW and ESB.
We've also watched Adywan's Revisited, Revisited Purist, and EditDroid Isolated Score in lieu of the GOUT.