Yes, Upvoting other people seems better in my opinion.
It's not only praise for the person but a chance to curate for yourself.
While with my posts if I self vote I may not even get curation :^)

That's the absurd/funny part though. Good people like you are considering social implications of things like self-voting and then there's the people posting pandemonium and throwing money to support it :|

So long as buying votes is profitable I think my ethics are going to be to use SBD for that instead of upvoting myself directly.