We have Like, Love, HaHa, Wow, Sad, Angry. No Dislike. And all are set to neutral since we've deliberately turned off reaction scores. We want reactions to, as much as possible, reflect on the content rather than the poster and a "Dislike" would inevitably be used the other way by certain members who essentially disapprove of every statement certain members make (it's a religion board and there's some real animosity between conservatives and progressives on certain issues). And, so far, we've had no issues with Reactions.
I've disabled it, not so much because I don't want people to never be able to dislike anything but because they often clicked it by mistake (it would usually be obvious they had by the context of things and/or because of other comments they made to the contrary) and most of them either never realized what they'd done or knew how to correct it if they did.