Wedding Videography: Necessary?

So I thought I had already convinced myself that I didn't need a videographer, why would I want to rewatch the moment later? I rather keep the mystical memory in my mind as it whirled by, rather than seeing it in real time. BUT I just watched The Knot's 2009 videography award winner - they had it designed like a music video. And gahh now I don't know what to do! Check out this video and tell me what you think - or if you're not convinced!

http://www.theknot.com/my-real-wedding/Video/126811/spivian-wedding-day-of-video