What was my fault???

Last sunday, I was travelling in a bus to Gate Way of India...
Was sitting on the last seat, lost in my own thoughts...
Just then, a couple + 2 small kids came on the last seat and disturbed my thoughts...
I was shocked and speechless when I saw the man and the lady buying one and half ticket each... not even looking at each other !!! The kids carrying their own little water bottles and snacks...
I was wondering what the kids might think when they grow up - "What was my fault???"
I was lost in more thoughts...

ENJOy...
-JC