What negative effects does polishing have?

[JCB62]

I've noticed there seems to be 2 schools of thought when it comes to polishing your Rolex. Some tout the 'never polished' history of thier watch as a positive, value increasing trait. Others like the "Like New" appearence an occasional polish will provide? I tend to lean toward the latter, but I wonder if I'm doing more harm than good. My 1985 GMT Master has been into the RSC twice and been through AD servicing probably 3 times in the 25 years since I bought it new, and I assume it's had a good polishing on each of those occasions. I dont really notice any big difference, but I'm not sure what to look for. I would say the one thing about my watch that has caught my eye while comparing to some of the beautiful GMT Pepsi examples I see om TRF, is that the 'teeth' or gear like spikes on the bezel dont appear to be quite as pronounced or sharp as some I see. I use my bezel a lot, so I always attributed it to 25 years of normal use. I also noticed that when I picked up a used 14060 that the bezel had a noticably more pronounced sharpness to it. Am I crazy. or is my GMT bezel (teeth) actually wearing away? I've had a new pepsi insert installed lately, but could it be time for a new bezel?