Giving rep out is up to the individual, so if you help someone and they give you rep so be it, i they don't then don't worry, you may get it next time or that person might not use the rep system, at the end of the day there only green bars, you are not going to become king for getting the most, some of us here use it to show our appreciation to members who help us, some members don't like the rep system so its swings and roundabouts, don't let it bother you to much