I spent 10 years as the welcomer of new members to a large cycling club, introducing them to other members, riding with them, in fact doing anything I could to make life nicer for new members, it was only when I took a year out to build a house and somebody at a commitee meeting asked who was going to do my job that I realised others thought I had been selected for a certain position within the club
Like any section of society there are givers and takers, I feel there are far more of the former.