Totally agree, and that's one of the main reason I rarely resteem as I don't like throwing something out there without adding any comment or explanation. Granted I have come across some good posts via resteem, but having that extra comment from the resteemer will add a lot more credibility to an otherwise undervalued post. And I think the resteem comment should be compulsory and more than 20 characters so people gotta type more than "This is a great post"