@marcelias This may be petty, but I'm very not interested in donating to a cause, no matter how worthy, when in return my contact information is sold and re-sold and re-re-sold and so on to every other cause wanting to skin a buck off of me.
If causes had a "don't reuse my info" checkbox, and honored it, and deleted each bit of my info the second it could legally be deleted, and didn't make me deeeeeply regret the few times I was weak and donated, I would donate way more often.