i find it bit funny when someone talks of value or undervalue of other peoples posts. there is upvote button - simple way to show your love toward someones work.
how will you use it its completely your choice and noone should tell others what to support.
its all about our individual choices and preferences. if you upvote bots, then you are into money, not into photography, music, animals or whatever.
and theres nothing wrong in that.
unless you start caring about future of Steemit, society, world and such =)
You can always poat a thoughful comment and not upvote... at least it's participating