For me I got hooked on trains through a combination of Thomas the Tank Engine and family ties to railroading. Most people set it aside when school and dating comes into the mix but the hobby brings me so much enjoyment that I have made a point of keeping involved in it though these life events.
Currently I am making my own money through various computer-related jobs and have been buying all the Lionel scale locomotives I drooled over as a lad in the 2000-2008 catalogs.