I do a LOT of repeating panels. It's honestly not done out of laziness. I just think the humor timing lends itself to that style.
I try my best to make each panel somewhat different.
Harold makes an excellent point.
Repeating panels, especially in a humor strip such as are's, has nothing at all to do with laziness.
In many cases, the humor comes from the repeating panels.
I mean, isn't that what life is? I bet if you took a really long look at your life, really dissected it, you'd see that your life, just like ours, is full of repeating panels.