The way it works in this world is that life goes on in circles. What we give, we get. Might not sometime appear as how we would like it to, but it comes back in ways that we may or may not realise.
How you treat others is crucially important. The people that we come into contact with, be it physically or through cyberspace, can have a future impact in our lives. And sometimes it can be pretty huge.
The person we think can be of no help to us whatsoever, could be the most important one at a later situation. Some might find this ridiculous but I have experienced it first hand on many counts where I made a silent prayer of gratitude for having treated the respective person well.
Always be good to people, there’s no reason not to.