I think the biggest issue I have with people vehemently against Ron and Hermione ending up together is that it almost invariably hinges on an unfair bias against Ron. You hear that Ron’s too stupid for her, too immature for her, too abusive for her, too insignificant for her, too cowardly for her, etc etc. Isn’t it weird how you don’t hear it the other way around? Like, you never hear that Hermione was too stuck-up, that she was too petty; that she was too much of a control-freak, or that she could never admit to being wrong. Arguments against the pairing generally hinge on denying Ron Weasley’s merits, and Ron Weasley deserves better than that.