It's because in A.P/Telangana,the number of people who are passionate about Railways is pretty less.....atleast going by the amount of people who actively participate in discussions in here or for that matter 'in general'.If i could site an example - In A.P people in the age group between 18 - 25 tend to be more passionate about - 'Movies',am not saying that is a bad thing but unlike interest in 'Movies',Rail Fanning or even more importantly taking keen interest in the field of Railways related to the country,state,region or your locality does not come off so easily.I guess as you grow up,your areas of interests tend to widen up a bit.Look in here for example - A lot of members in here i am sure are less than the age of 30.....so that points out that - 'Rail Fanning as an interest tends to come very early either directly or naturally...
more... or indirectly or through a known person to you.