This sort of thing amuses me. And fair enough, I often wonder about that myself. From my perspective, there's coterie of trolls that lurch about here, blowing their dog whistles mightily, disagreeing via knee jerk reaction with what is, well, obvious.

But the reason I click dislike, or sad, or occasionally funny is more because I think there is so much wrong with a given post, so much that is unfairly presented, or cherry picked, that it isn't worth  responding. I just don't have the energy, especially when 99% of the time, one three things happens:

1. The original poster never replies or responds, so my effort was wasted. 
2. The original poster was only trolling, and is greatly enjoying how I am putting energy into responding, especially if passionately. 
3. Someone dismisses or belittles my response, thinking they are clever.

 I find there are a few honest conservatives around, the rest are...well, you fill in the blank. Until the latter thin out, it's "disagree."