On my personal account I approach things in the way that I feel is logical to my investment. I self vote on my posts and not on my comments. If someone wants to vote on my comments, that's fine by me, but I don't reward my own engagement. I reward other users engagement by voting on their comments. That being said, I invested heavily into steemit a long time ago and I have been investing more lately, so voting for my own post makes sense to me because I deserve to use my share of rewards however I see fit. Personally I get a little annoyed by people commenting on a post and voting for their comment and not the post, but I can't convince anyone that there is a right or wrong way to do things. Thanks for sharing this!