Aussie Bob, it's attitudes like yours that cause men who are suffering depression to avoid seeking help for fear of appearing weak. There may well have been wartime vets who managed to get through devastating emotional trauma without outside help, there were also a hell of lot who DIDN'T, have you never heard of shell shock? Has it occurred to you that it is perhaps because of the experiences of others who have had little to no support after a traumatic experience that we now make those services available.
Getting "back on the horse" is something that is good for kids when they've fallen off their new bike while riding down the driveway. It is something that was necessary during wartime because they were desperately short of pilots and couldn't afford to have physically capable people sitting idle on the ground. We don't have those pressures at the moment. Take a look around, as far as I can tell we are not at war.
Most people don't ask for help until it is too late. If someone is asking for help, then chances are they needed it months ago. Telling them to "get over it" is irresponsible.
Rant over.