I am an intensive care unit nurse that also is the daughter of a long time (now reformed smoker) smoker with emphysema.
Dying of emphysema and lung disease is a nasty thing. You don't have emphysema one moment and then all of a sudden it creeps up on you (like reaching critical mass) and you all of a sudden reach the point when it affects your daily life. Unfortunatly, by the time the severe symptoms set in stopping smoking helps you feel less crappy, but cannot take that level of lung disease away.
Once the lung disease like emphysema sets in, you are screwed. Your life will revolve around your disease forever. You surely can lead a productive life after the onset of emphysema, but everything in your life will revolve around the need to breathe.
No flu shot? Now you will have to worry that the flu may lead to a pneumonia that ends up with you being on a ventilator. If your lung disease is bad, and you don't die from the pneumonia, you may be stuck on a ventilator with a tracheostomy for the rest of your life. If that doesn't scare you - your insurance will make you live in a nasty subacute facility that allows patients on breathing machines. Since those are few and far between, you will likely have to move far away from family. Guess what, the kicker is that when they put you on the breathing machine (ventilator) you may STILL feel like you are fighting for your breath.
The good news is, once you are hospitalized you don't need to stand in line for a flu shot.
I am not even going to address the cardiac issue as it relates to smoking except to say it is the first best (with immediate positive effect) thing you can do to prevent a heart attack. Other things go to lifestyle changes that would take a while to reap the benifit.
By the way, frequently smokers who are used to a certain level of shortness of breath mistake heart pain "angna" for their usual feeling of breathlessnes, that can cause a dangerous time lage between the onset of a heart attack and seeking medical attention. Really really bad thing.
Like I said. You feel fine now. But the symptoms of emphysema can really creep up on you. With my mom, she had a chest xray prior to surgery showing her lungs were fine. A little over a year later she was profoundly short of breath and an her xray at that time bore no resemblence to the first. The progression (for her) was that fast. She now can walk short bits, then has to sit. She takes God knows how many puffers a day to control her symptoms. A medication (prednisone) that could potentially help control the symptoms she can no longer use because of life and death types of complications. She is short of breath alot of the time, but does not qualifiy for oxygen, that certainly would help the quality of her life.
Still wanna smoke?
Sugardrawers, as a side note - as an ICU nurse of over 20 years, I will tell you that Type A people with lung disease are the most miserable - they lose all control in their lives and there aren't enough drugs or therapy to get them over it.
(by the way, if anyone here thinks this message is "harsh" I can repost and tell you the "real life" harsh version)