healthy/sick

I'm a healthy person. do i eat healthy? not really, do i exercise regularily? other than work no. my job being a physically demanding one isnt really that much excercise. i have never taken vitamins and never will when i was younger the neighbors kids took vitamins daily we were the same age and they were sick all the time. me if im lucky ill get a head cold for a couple hours once a year. i weigh 190 to 200 pounds i would describe myself as muscular. why dont i get sick more than everyone one i know who "eats healthy" it seems the healthier you eat the more times you get sick. i have a high metabolism thats true enough so that may be why my body remains healthy people say my metabolism will slow down but there are older people who can eat like me and also remain slim. i dont mean to say that they are lying but maybe the metabolism just needs to be kept up. a thing to add to my list of pet peeves is when people say "its good for you" or "its reccomended to have at least this much of somthing per day" if its good for me then why does it taste like shit? if i ate everything that was reccomended everyday i would explode, i would have to eat all day.