It clearly doesn't though.

Obesity and heart disease have been killing far more people in the US than covid and yet Mcdonalds and Coke advertisements are everywhere inbetween television entertainment.

Also note obesity/heart disease are among the greatest risk factors of poor health outcomes for covid.

Why is there little to no mention of eating healthy and exercising in the government's health guidelines to combat this threat?

There are countless other examples of bureaucrats caring more about money and power than public health - while putting on the appearance of caring for public health. See also: the war on drugs.

Overeating and poor exercise only hurts yourself. The difference is that you going to a concert, contracting corona and passing it around our household/workplace may kill somebody completely unrelated to the initial risk vector, how would you feel if your neighbour eating McDonald’s directly affected your health?

Even before coronavirus, going to a concert, contracting influenza and passing it around could have killed someone. Influenza kills thousands every year, asymptomatic transmission is common, and the vaccine is only partially effective. COVID-19 is significantly more deadly but that's just a difference in degree; the same fundamentals still applied. So by your logic apparently concerts shouldn't have ever been permitted at all.

Corona is substantially more deadly, and long term effects can be permanent, it’s also in addition to the flu. By your logic we should just let corona run it’s course? You’re willing to let others die just so you can see a concert?

Do you think we should let group gatherings happen during flu season?

If not, how much more deadly (be precise) would the flu need to be before we should ban group socialization?

Trying to figure out if you're thinking in terms of a logical metric based risk analysis, or just emotion and terror of death.

We can all ask ourself : How many time I would accept to be confined now to live one more day/week/month/year at the end of my life. Now we can use this ratio and apply it to our current choice to calibrate how much we stay confined.

Isn't it better to live life fully when we are young and healthy, than to hide inside our homes in hopes for an extremely small chance that we might have a little extra time when we are old and decrepit?

Seems like this ratio would vary greatly among such demographics.

>Overeating and poor exercise only hurts yourself.

Obese people are twice as likely to be hospitalized for covid.

When hospital beds are being overrun, someone elses life long decisions to disregard their own health does indeed affect other peoples health negatively.

Why are you scared? Just wear a mask :)