Why people are making excuses for something they don't like? I'v never made an excuse for not smoking, just because it fucking sucks. It fucking sucks, just like climbing up the stairs or lifting weights. It's not fun, it doesn't feel good. People are watching other people, going over the instagram stories and seeing people being fit, but it's not fun. It's only fun if it's your lifestyle, if you like to eat healthy and you like to use your body for moving instead of sipping the coffee at the office job.
Nobody forces you to move. You don't need to make excuses, it just ain't for you.