You admit that women and minorities experience more frequent and severe discrimination. From that follows that a sample of those people are statistically more likely to have greater experience with discrimination than an otherwise-similar sample of white men. That's the point I made that prompted you to reply; I haven't yet seen a criticism of that point but we can discuss it if you like.
Instead you chose to argue the point "everybody experiences at least some discrimination". You're probably right, but in doing so you choose a definition of the word "discrimination" so broad that it becomes much less meaningful.
The net effect of this type of comment is to minimise the more severe discrimination experienced by women and minorities. To diminish the power of their experience.
So, to sum up; you replied to me to argue against a straw man, with the effect (conscious or not) of minimising the discrimination suffered by women and minorities.
My best guess is that you feel guilt by association, possibly insecurity. You're fed up of feeling that and are pushing back in order to feel better. It's understandable, it's natural.
I've got two points to make here that might help:
(1) There are other ways to make yourself feel better. Listening to people & helping is a good one. Reframe yourself as someone helping solve the problem, rather than someone trying to diminish the problem.
(2) Society is not a zero sum game. Raising up women and minorities does not mean knocking down men, even though sometimes it might feel that way.
Hope that helps. Thanks for the up-vote, right back at you.