Zeroing out posts is probably the one thing that WILL drive people away from the platform. Imagine making what you think is decent content and then having it Zeroed because reasons. It's not a nice feeling. I got a bunch zeroed once from a retaliation downvote from a abuser, Didn't lose much, kept say to myself oh it's fine I Expected this. But deep down it still hurt.
The only times I generally downvote is on content I think is bad and has no effort to it or post errors I come across where people posted something incorrectly and edited it out saying don't vote error in post etc.
Oh and sometimes religion content because I'm a heathen and I don't like religion. depends what mood i'm in, I don't go actively looking to downvote religious stuff but if its in front of me and I'm like 'WAAA me no like' I'd downvote it.
Yes I know kinda a petty reason but it is what it is.
I was also going to bring up the fact that you seem like you get a lot of auto votes since you have like 300 votes after 30 mins. But then I remembered that you've been around for ages and also 28k followers and I'm like. 'oh yeah.. thats probably why' xD
...see my comment on here regarding this problem.