We can each think that what we do is okay :)
I think it's best to have freedom, but as I said, you get judged on what you do. Some will do the research into whether an account is a sock puppet. There are accounts that upvote every post and comment they do. That is selfish and I downvote some of them. Any behaviour should be assessed in context. I just decided some time ago that I didn't want to self-vote. I may have done it few times accidentally, but cancelled those out.
My voting on other accounts is mostly manual and I don't vote on my alts. I am happy to declare what those are if anyone cares.