Well, I've only been carrying a red dot Glock of some form every day since 2012 so you've got a couple years on me, and I've only got about 40,000 rounds through the various high end red dots myself. I test my gear pretty thoroughly and have not run into the light issues Bluedreax describes with a LED RMR. The "dual illuminated" versions definitely have those issues though IME. All of my testing and pass/fail criteria are based on personal concealed carry though, not proactive door kicking, and there are some differences that apply to dots as mentioned above.
How many did you put 40,000 rounds through? How long did it take you to put 40,000 rounds through one.
