Writing the Big Scenes in Fiction

Let me ask you a question. Do you avoid / dread / loathe writing the big scenes in your fiction? Over the years I've noticed one of two things. One, the writer is so nervous about writing the big important scenes that they will subconsciously avoid them by taking ages over getting to them. Here's how it goes. There's a crucial scene in the story where there's a confrontation or a climactic event - and the writer is creeping up towards it, filling the pages with exposition and preparatory dialogue - only to freeze just before 'the big scene' and put off writing anymore - sometimes for months or, in some cases, years. The other scenario involves glossing over that part of the story. You'll often see writers fill pages with the run up to the big event - all good showing instead of telling and yet, when it comes to 'the big scene' it's told from a distance or from an uninvolved point of view or, most commonly, in retrospect, after the ...