Definately agree. Upvotes, follows and comments should happen organically through creating quality content that people like.
I believe I may have entertained a few of these type of requests (follow for follow) to my shame. I will say that I do make it a point to follow people back without being prompted but I never ask for them because it would feel so forced and unnatural.
Created a little image for the occasion when someone mentioned the upvote begging issue.
If you build it (quality content that is), they will come. (Upvotes, follows, resteems etc)