Yeah we got ours last week and while we were planning on using it towards principle on our mortgage our plans had to change slightly.
My father in law(my 1 year olds main caregiver during the day while my wife & I work) has prostate cancer and needs to go through 8 weeks of chemo which works out to about $1800 in mortgage payments while my wife takes off via FMLA to care for him during that time
In the end it works out well though since my wife has always wanted to be a stay at home mom at least she gets a taste of it for a little while.
Too bad the circumstances surrounding things aren't what you'd want them to be.
BTW prostate cancer is one of the "better" forms he could have all things considered & he should make a full recovery without issue if all goes as planned.