Handguns, probably weekly. Rifles, almost never.
And I "mix" iron sight (in reasonable light) and laser sights (in hardly any light), and try to watch the front sight/dot as I dry fire.
My wife has always had trouble with squeezing the trigger, and she started doing dry-fire practice, too. It has helped, and she is encouraged by this.
.30-06 Springfield: 100 yrs + and still going strong