Perhaps someone just went through some of your comments and didn't like them either. You feeling bad is probably not the sole intention of those downvotes. People will be more than happy to upvote some of your comments if they start being relevant to rationality.
I looked through some of your comments, and they're not equally downvoted. Some of them are upvoted. I expect there's some signal there if you're willing to look for it. Might not be a signal you like or care about, though.
8) It's too long, says very little and doesn't have a summary preceding it. 9) Almost all of your writing is either political or meta, which suggests you don't belong here and will only add noise. 10) You've clearly failed to learn from previous criticism.
In many of your comments you seem to advocate an overly pessimistic view of humanity and portray people as unusually selfish or sadistic. Single instances of such comments might not get downvoted, but once there are enough of them to make a pattern, this might evoke a stronger reaction and even oversensitivity to such a pattern causing innocent comments to get the punishment. I haven't downvoted such comments, but don't want to see them either. This feels like a matter of mental hygiene. In some of your comments you're introducing negative bias that takes unnecessary cognitive work to counter and I think you know which comments I'm talking about.
From your previous comments I infer you're aware of this bias, or at least that other people consistently view it as such. It seems to me this bias is specific to certain topics, so if you don't know how to counter it yourself, it might be better to avoid these topics as much as possible. Even if you think your ideas of some aspects of human psychology are accurate, you might want to reconsider your prospects of making people conform to them here in light of accumulating evidence, and pursue more fruitful and noncontroversial discussion.