Because there are just way too many stupid people in the world.
NEVER STOP AT THE END OF AN ESCALATOR
Yes, this might be a special message directed to the three generations of one family, including a baby in a pram (those prams make very efficient escalator obstacles), who decided to do just that. When I was standing behind them. Closely behind them.
I'm not sure what was so urgent in that pram that it caused all three (maybe I should say two because the baby didn't have a choice) to stop dead right at the bottom. Baby wasn't crying. It was sitting up and gurgling happily so it hadn't stopped breathing and wasn't in immediate need of resuscitation. My guess was that it was in imminent danger of starvation from the food that was proffered. But surely that could have happened another few steps away. So I could have exited the escalator without having to do an awkward little dance on the ever-changing bottom step.
It had me in a bit of a tizz because the only other time that I've tried to go against the flow of an escalator ended up with scrapes, bruising and public humiliation. And it killed any desire in me to break rules and take unnecessary chances.
Luckily there was no scrapes, bruises or public humiliation today. Probably because I'm more fleet of foot than I was at the age of 10. Speed training has obviously paid off big time.
But I've decided that in the future I might adopt this method of travelling on escalators to avoid inconsiderate fellow escalator-riders.
And if anyone has any idea of how to safely dismount from this position I'll be truly grateful.