I was kinda glad it got cancelled. I'd committed to running a relay leg and had no desire to stand around for 2-3 hours in 20 degree weather, 15 mph winds, just to run 6.5 miles.
I had still planned to drive up in the morning simply because I'd committed to the relay team. But I wouldn't have even thought twice about skipping out on the half. The full - that's a different story.
But anyone who's been running for a long time understands this stuff happens. You get sick during the taper, get injured 3 weeks out, or have terrible weather - that's all part of it. Nothing ever goes quite as planned.