Matt, stop now. Take it from a guy who started the same way you did. I was 16 years old and started smoking with my friends whenever we'd party. It started as a Friday, Saturday thing, then it became a Thursday through Sunday thing, then it was everyday. It stayed everyday until 71 days ago and I'm 34 years old now. Like everybody else on this site, we had no intention of becoming a "smoker". We figured we'd smoke in social situations and then quit whenever we were ready. It doesn't work that way. At least not for some of us. I was a state qualifier in swimming in high school and I smoked like you did so I get the whole "I'm invincible" thing. Trust me, it's not as easy by your mid to late 20's. I'm overweight and out of shape well beyond my years and I blame it on my smoking addiction.
If you keep smoking, you'll someday look back on this conversation and you'll see I was right. You'll kick yourself for spending thousands of dollars on a stupid habit. If you were smart enough to come to this website, then do yourself a favor and pay attention. We're all a bunch of long time smokers who would give up a lot to go back in time and quit when we had the chance. Quit now and thank yourself later.