We need to recognize and value all sides to the question:
OP---you are correct, it is a tragedy how people in this country blow up, and unfathomable to a young runner.
To the empathizers---you too are correct, life has a way of SERIOUSLY getting in the way.
1. MOST Americans are fat. Over 70% according to most estimates. I personally think it's even higher, because soft, "dad-bod" types are probably not counted in this number. Look around you--the number of fit, strong, healthy looking people is now vanishingly low. This is an objective tragedy.
2. The modern American lifestyle that one poster detailed (sedentary job, long commutes, bad food, etc) is a disaster, and fatness is the logical conclusion. Put plainly: FATNESS IS NOW THE **DEFAULT** SETTING for a human in America. If you live the "lowest common denominator" life that most people live--eating poorly, avoiding exercise--you WILL be fat in this country. Full stop.
You have to be "awake" and making proactively good decisions to be thin and healthy in modern America. Sad but true.
Note this is not a judgement against current Americans--they are no less disciplined than previous generations*--it's just the DEFAULT setting used to be less food and more movement in 1820 and 1920 compared to 2020.
*I'm not sure I fully believe this. People seem awfully dissipated these days. The obesity, the opioids, the tattoos--it's a real mess out there.
My mother and her sister went to Netherlands and a few other central European countries last year and were blown away with how "attractive" all the men were. It's because they are slimmer and they dress better--they walk and bike more. Unfortunately the American lifestyle is hitting western Europe and moving east--pretty soon it will be the same everywhere.
3. It has gotten much worse since the 1980s--more calories, less physical exertion = everyone is fat. Look at old photo albums of your parents--it's incredible how thin everyone was. The crazy thing is that the thin 20-somethings partying in my parent's photo albums are now 70 and they're all fat, have diabetes, etc. The equivalent 20-somethings of today are at least 30 lbs heavier-- think how fat they'll be at 70!
4. Still, STILL--there are a lot of excuses in this thread. I personally consider keeping oneself in good shape a MORAL OBLIGATION--both to your family and the larger society. I had to have a heart to heart talk with my dad when he started getting fatter because I made it clear he was sentencing himself to a low quality of life for the last 20 years of his life filled with medical issues, and by extension, sentencing ME to dealing with them too. He's doing his best, we'll see.
Most everyone has time for their own health if they give a damn. And everyone can control what they put in their mouth if they give a damn. Clearly, most Americans, former runners included, don't give a damn. They're tired, they're stressed, they have family obligations--we get it. But MOST Americans spend hours on TV and other wastes of life, fantasy football, etc. There is time to be carved out for health IF THEY GIVE A DAMN. Most don't. Sad but true.
I'm 40. I work big, stressful hours providing for 4 kids, one of whom is severely special needs, so I REALLY don't want to hear about how busy people are. But I'm not a fat pig. Get up at 5 or 6 and exercise several times a week, and control what goes in your mouth. GIVE A DAMN, for yourself and others. Be an example to your children.
It starts with your own dignity. Shout it out: I'm a human being, g-ddammit, my life has value!
https://youtu.be/2t9fVcBpd3U