

It’s an… experience, having a cold jet of water spray your nether regions, and also a hell of a way to wake up in the morning. Having a clean butt after you do your business is worth it, though. I know they make them with warm water hookups, but mine isn’t that fancy.
Because helping others around you and “doing good” helps build community, which you are a part of.
If you want to look at it from a selfish perspective, doing good and helping others builds goodwill towards yourself, and sooner or later, you may need to rely on others doing good for you. It’s much easier to get help if others think highly of you.
As far as being manipulated, you probably shouldn’t just blindly help people who request it. Keep your eyes open and your guard up when dealing with people you don’t know or trust.