I noticed lately that when I get together with girlfriends we spend a good amount of time whining, complaining, bitching and moaning about the perils of aging. The wrinkles have sneaked up, the weight keeps coming on even though our diets and exercise routines haven’t changed, the eyesight just keeps getting worse, the knees hurt when we climb stairs, our menstrual cycles are all wacky, the gray hairs are taking over, we hit peak tiredness by 8 p.m., and on and on. You get the gist. It’s like suddenly we realize we’re middle-aged and our conversations change. We commiserate with others who understand us, and naturally, we support our collective…