You have been living in some other planet, if you have managed the escape the news about the typhoon that hit the Philippines last week and left great devastation behind.
Both Hyatt and United has made announcements of donating cash or points/miles to help the victims. Programs have promised to match the cash donations to a certain limit.
You should not, however, use your points, at least with Hyatt, for a monetary donations. Hyatt Gold Passport sells you their points for more than 2 cents each, but would only make $25 donation for every 5,000 points used. That values Hyatt point at $.005 that is half of a US cent.
Hyatt made the following announcement on a post to FlyerTalk that you can access here.
Giving cash up to the point that the company has promised to match make sense.
It makes no sense, none whatsoever, to convert your Hyatt points at half of a cent for a monetary donation.