I moved to where I live now in August 2007. In that time I have always driven to the same station and caught either the 7.36, 7.46 or 7.54 train to work in the mornings and usually it's always the same people on the same train; so one get's to know faces. Same as the car park - it's normally the same people that use the car park and again - the same faces one sees most mornings and evenings. Yet very few - if any - will even acknowledge you / the other people. Why? Is it really that hard to just make eye contact and smile or nod - no exchange of words needed.
There are a few people that do engage in conversation; but most just totally ignore everyone
all rather odd