I was thinking about it. I donate to quite a few charities, but they specifically mean something to me. Others I don't really think about, though they're good. I guess we all have a threshold or we'd be broke and for many that could be no donations at all or just a fiver the the street guy.
I prefer to donate time. I'm now president of one local non-profit (in addition to my paying job), and a regular participant in another. Sometimes I'll donate supplies that we need, but never money.
If a time comes when I have little time and a lot of money, maybe I'll switch. Donors are necessary. But I know that we need hands more than dollars.