As with children, dogs have become too molly coddled and over pampered in the 21st century..

I suggest dogs of my childhood were far more robust and less neurotic,
due to being better acclimatised to external challenges and stimulation,
than the soft headed pooches of today..

My family's dogs were rabbit hunting companions used to shot guns.
or my best friend who I took on long big adventure walks in all sorts of environments and conditions.'
Geting him used to loud traffic, railway lines, boisterous rough gangs of my schoolmates, FIREWORKS, etc...

We could/should blame inexperienced dog owners, the rise in dog ownership as domestic status symbols and fashion accessories
.. and plenty of other modern day factors which drasticaly push up the prices of dog ownership,
which means dogs have increasingly more money invested in their upkeep,
making families over protective and inkibited from taking risks with their 'fur babies'assets/posessions...

.. and of course the INTERNET must again be blamed for indulging the crankier organized spectrum of dog owners...