Simply because they are not happy.
No one is happy to look worse, feel worse, and generally live a crappy lifestyle, and no one actively wants this.
However, many people believe that :
a) No matter how hard they try, they won't become fit
b) They will never look good (also ties into why people don't both with fashion along with a reduction in the number of girls wearing make-up)
c) You have to live in the gym 24/7 to improve.
d) Everyone who looks good will judge them and attack them in a mob weilding pitch forks and torches because
they judge everyone and are insecure thus believe that everyone thinks the same.
e) Self entitlement.
"It is my right", "I'm entitled to...". This culture has raised people who genuinely believe that they deserve something for nothing (look at the amount of people who felt they deserved holidays and big TV's and are now in debt). These people have never worked hard at anything and never will. Sadly, when it comes to getting fit, you either work hard or fail.
f) No self control. People can not say no to **** food and are not willing to make sacrifices for greater gains in the future as they want immediate satisfaction. Partially ties in with
e).
g) No one is honest.
"You can't say that!". No longer are you allowed to tell the truth and say to someone that they are fat and would look better if they dropped the weight. This results in Team Fatass all grouping together and comforting each other in a self built world of denial.
h) Due to
g), many people now have a deluded idea as to what looks good and what looks bad. If you ask people nowadays, they think someone who is obese is merely overweight or chubby due to the number of fat people (and the stupid presumption that the average person can't be fat) and the insane size that some people become. Many people also now think that what is healthy is unfit. I remember a load of girls claiming that the Pussycat Dolls were too skinny and unfit.....even though they dance for hours on end
Never underestimate the power of denial.
All in all, lots of problems accumulating to a really ****ed up nation
Rubbish, rubbish, rubbish.
Everyone has 3 hours free per
week.
You just decided to do other things instead.
As for the knee/hip problem, buy a bike, go swimming, do arm weights, do yoga. There are many things to do besides running.
Yes you can.
Want some time to yourself?
Go to the gym.
Want to just listen to music?
Gym.
Want something productive to do?
Gym
Want to look better?
...you see where I'm going with this.
Anyone who says what you did have simply jumped to a crap conclusion that shows you have never been near a gym/seriously attended one and want to make an excuse as to why you should not.