grinding wheel abuse pet peeve

I doubt if I will ever understand why it seems that every time I allow someone to help me on a project of theirs if they use one of my bench grinders after they leave it never fails that I have to spend a lot of time cleaning up the wheels.
I learned to grind on an old arbor grinder powered by a 7.5 hp motor with 2 to 3 inch wide 18" diameter wheels. at 11 or 12 years old I might stand for hours and hours putting the final edge on plow shears cultivator sweeps brush hog blades and the like after the blacksmith had done most of the sharpening of them using his forge anvil and hammer or the trip hammer.
If I had ground a grove in the wheel I would have probably received a clout on my head by the hand of a mad who swung a 4 lb hammer 10 hours a day. Yes every so often a wheel would need dressing up some but there would not be a grove in it or the edges rounded.
I depend on my bench grinders to sharpen my drill bits and HSS for my lathe and when they have a grove gouged in them I have to spend a lot of time cleaning up the face as well as wasting a lot of the wheel diameter. We'll just call it one of my pet peeves
When I sharpen drill bits for instance I don't use that stupid angled grove the manufacture so stupidly thought was such a great idea to form into the rest of almost all grinders I move my bits from side to side across the entire face of the wheel causing as equal wear on the wheels as possible
I noticed this on one of my bench grinders today and it has been so long since I have had to do any deep dressing to one of my wheels I have no idea where my star wheeled dresser is
Attachment 35109
By the time I thought to snap a picture of it I had already removed about half the depth of the groove which gave me enough surface to shapen a 1/4" drill bit that I needed right then and didn't want to take the time to finish dressing off the wheel. But the first larger bit I have to sharpen is going to mean I will have to complete what I started