With the exception of the third point, I actually like all of these rules, kind of. However, I don't really like them as rules, per se, so much as guidelines.

With the exception of the third point, I actually like all of these rules, kind of. However, I don't really like them as rules, per se, so much as guidelines. The thing of it is, if a sentence has been ended with a preposition, more often than not it can be rewritten in a clearer manner. Similarly, while passive voice is useful, to abundantly use it tends to make your writing dull and unclear. Similarly, split infinitives often obfuscate meaning, and sentences beginning with "but", "or", and", or "however" tend to be better served combined with the preceding sentence. Thus, as a general rule, I prefer for amateur writers to follow these guidelines as rules. That being said, once you know how to write well enough and you understand when these guidelines make your writing better and when they make it worse, for the love of $deity, please break them all over the place.