We do this too, but we also often acknowledge, in front of the kids, that we have a lot of privilege to be able to do this. I want to make sure they know that poor people don't have the time to do what we do, because I already see signs of them asking "why don't homeless people just get jobs" and "did you know [classmate] has never been on a cruise before!!". I answer those questions too but I'm hoping to change their world view so they don't have to ask because they already know.