For somebody scared of heights, the thought of having nothing between me and the floor of Lincoln Cathedral (while at 90 feet) is pretty terrifying.

I will literally be hanging there like shark-bait for gravity.

Doing this to conquer my own crippling fear is a pretty good reason, but doing it for a good cause is a much better one. 

Please give what you can and help those who don't have this once-in-a-lifetime opportunity. Thank you.