I agree with you. And if you just say ,, nice post'' or ,,good job'', a person at least know that you're visit his or her post. It's like in real life when somebody in the store or on parking lot say to you : nice day and you reply : yes indeed. You feel good about this and also on steemit if somebody leave a comment on my post like this I'm glad. Sometimes two words are better than 100 upvotes from curation trail. At least in my opinion.