There is a zero chance of tanomba been alive in WW2. If we assign luck to events that zero chance of probability, then you are going against the definition of the word. The definition of the word actually deals with probability.Luckily, I wasn't alive during WW2. So yes.
Compared to being born in a third world country, being born in the US is absolutely a success. You were successful in getting all the rights, freedoms and opportunities that come with being an American, and you did nothing to earn it.
Your statement, of saying you are lucky of been in a time were you aren't called to arms it is correct. There was the very real possibility of gw bush of calling a draft after 911, low but an actual real one.
If we were to take your definition of luck, then everything is luck... Literally, because most things in life we have no control of, and your definition does not take into account plausiblility also.
Here tanomba, are you a lucky guy that your wife is not cucking you?
I don't think a normal person will consider that luck, it is the expected behavior, and expected behavior is not luck.