Why do I Wear my Bag in Front of me on the Subway?

I don't know why so few people do what seems to me to be the obviously courteous thing to do:

Wear your bag in front of you. 

On the Subway in New York, at least on my number 1 train (Woo! Number 1!), it's always crowded. And yet people come in with shoulder bags and giant backpacks sticking out way behind them bumping everyone in the way. How many times have you been bumped or pushed by a bag on someone's bag and they don't even notice?

Instead I wear my bag in front. Because we all want a little space in front of us, I'm not taking up any unnecessary space. 

Get with the program people, and flip that bag to the front! You'll never accidentally knock down an old lady again.

And now Today's:

Random Song of Joy