I agree,but not all people are like that,i know some people here on steem investing their money to power up and give their upvote for free to some authors on steem..
like @nathanmars he always give upvote for free,@steempyt upvoting authors for free..

Self upvote is not bad because they invest and use their own money to make money,it is for them if they want to give free upvotes to others and not only for their selves.

more power and God Bless!