Being sick-why can't it be a choice?

God gives us a free will to choose between right and wrong. Why can't we have the CHOICE on whether to get sick or not? We can do all the "ounce of prevention is worth a pound of cure" tactics, but unless you are a hermit, you WILL come in contact with a bacteria or virus somewhere at sometime. It is never our choice to be sick.
Now, sometimes, if you have a great hubby or awesome children who almost love the chance to "wait" on you because you are sick, (I am blessed with a daughter like this. Try NOT to covet! :-)) it is kind of like a mini-vacation! Depending on the "sick" part. If you have your head in a bucket or toilet, it will NOT be any kind of vacation. A mild fever, some sniffles, is almost bearable when there is chicken noodle soup, glass of never-empty O.J., magazines, and soft tissues brought to you. "Mom, don't worry about anything, we will watch the baby." I could almost be THAT kind of sick once a month!
I am sick now, and it did start with the "That" kind of sick, then my baby took the "spotlight". He decided to get sicker than me! How dare he! My poor 19-month-old baby has been throwing up all morning. (1 a.m. to 10 a.m.) My daughter and I had to help him because he became so weak and tired, he couldn't even sit up by himself.
It has calmed down a bit now. So he and I are in bed, getting chicken noodle soup, (his just broth in a cuppy), my never-empty O.J., cartoons, and soft tissues. "Mom don't worry about anything, we will clean up the house and wash all the sheets and towels." If all that wasn't great enough, I have one of the three best cuddlers-in-the-world with me! I will CHOOSE that any day!