It is an interesting topic indeed:

In my opinion, I have two things in mind when we are talking about auto vote:

1st, I save time to manage the account and supported friends and some of those who always post a good reading, and I can check my steemworld to read later.

2nd, I can gain maximum curation reward by setting upvoting time at some posts that usually get fat upvotes as well.

I will spare some VP to manage manual upvotes for some posts I find interesting as well.

But I have stopped the auto voting service since the migration of the WoxAuto migrated to somewhere else...

Have a nice day @stef1