I think the Battle of the Bastards broke me.
So, that Stark spawn starts running, and Ramsay Bolton misses him with a bow about 5 times before finally hitting him lethally at, I dunno, 100-200 yards? I don't think so: bows aren't very accurate. Never mind what an idiot Snow is for putting himself at so much risk.
Then the cavalry charge into combat, in what most be just about the most crazy and ineffective way to waste expensive troops imaginable. Cavalry are for flanking, and exploiting weaknesses in the line, etc. Then everyone else charges into battle, there's a general slaughter, and suddenly this huge wall of bodies develops. As of course has never happened in any battle in history, ever. Then to the deliver a coup de grace, Bolton sends in his heavily armoured spearmen on a wide flanking manoeuver to surround Snow's forces. Those would be the heavily armoured spearmen, probably quite slow, you'd normally expect right in the middle of your frontline as a shieldwall because they'd be perfect for the job of a solid centre and are vulnerable to being outflanked, but for some mysterious reason have been left in reserve.
This was merely a foretaste of the even more stupity/insanity at the Battle of Winterfell, where Snow et al. found some truly amazing tactics to accomplish the unnecessary slaughter of his own troops.