Why SHOULD a man be judged if he stole in the following circumstances?if a man stole a medicine because his wife was dying and he didnot have money...

When you say "judged" I assume you mean something like
"prosecuted" or "punished."

If so, the best argument for
this is that the man would surely have had other things that he could have tried before
stealing the medicine.

If a man truly needed some medicine
and he could not afford it, it seems very likely that he could have some other options
for obtaining the medicine.  At the very least, he could have gone to the person who
owned the store and explained his situation.  Ethically speaking, he should have done
this.  He should have gone in, explained, arranged some sort of way to pay (work for the
drug store owner, etc).  He should have tried all of these things so that he would not
have to do something unethical to the owner of the store.