I usually leave a like, as I watch tons of videos (for research). Just left a like on yours'
Generally I find the ratios are close, 66% likes to 33% dislikes on high traffic videos and channels (kids channels).
My kids when they watch from their devices don't click or comment, as I have not taught them about that - plus I would not want them to go into the comments on some kids channels and videos, there is so much abuse and swearing on some of them.
Generally when you're small and in the sub4sub loop (or relationship4relationship loop), you'll get like 20-100 comments and 10-30 likes on your video from all the other channels you are subbed to and are subbed to you, and no dislikes. S4S usually don't dislike. The dislikes start once you get viewers out of the sub loops, where those ratios above come from. You'll also get lots of gibberish comments like "DFGDGDF $%%54^%$", that's apparently from little kids mashing the screen on their parents devices.