Actually I agree with you. Bots are used for increasing visibility of posts. There is no meaning of using a bot for 1 photo post or non-quality posts. And almost all bots give profit to users who know how to use them.
In my last article you read that it's possible to earn money from upvote of bots. But I want to say it again for users who don't know how to use a bot in the best way: You should learn it good before you use them and never play gamble with those bid bots or as you know casino will always win and you will always lose. That's why I'm trying to teach people how to use bots safely. But as I mentioned in this post, some bots are keeping all profit for themselves. That's why choosing a bot is the most important thing on Steemit (I wrote this paragraph for new users).
I want to ask you something though. Are you planning to create a bot in future? You're already our witness, I saw some people were creating bots in different communities. What are your thoughts about it?