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Self-upvoting my own post adds $0.01 to its value, which does almost nothing to increase its visibility and only serves to increase my profits.

Self-upvoting my own comment adds $0.01 to its value, which pushes its visibility above that of the spam comments and makes my comment more visible.

If my vote value were higher, I could see how upvoting my own post could serve a purpose (Actually promotes the post) and how upvoting a comment becomes problematic. I still disagree with the concept of self-curation overall, as it should be the community's job to curate, not the user's - Everyone thinks their own posts are great, but if the author is the only one enjoying their post then it really doesn't deserve to be rewarded IMO

I upvote my own posts. However, I do so after at least 30 minutes so my viewers / voters can get the curation rewards benefits. Often it ends up being several hours before I remember to come back and do so. It's really the whales who upvote themselves more than others who are causing the problem. Most of the whales distribute their votes around, it's the few bad apples that fuel the debate.