Check it Combat as war vs. Combat as sport. The best--and least partisan--analysis of TSR D&D combat vs. WOTC D&D combat I have ever seen. Read it now or be forced to follow a link to it every time the issue comes up for the rest of your life. It's a classic on the level of Matt Finch's Old School Primer.
Bonus: (Noisms on how it isn't anybody's job to give you ninja opportunities)