Milestone - not sure. I've had many, but the biggest is that I don't smoke. At one point in life I stopped thinking that was possible, even my son laughed at me when I said I was going to try to quit yet again, this time via vaping. He didn't think it was possible either.
It's nice to be able to say I don't smoke when asked. It's nice to be able to breathe. It's nice to spend money on anything I want to spend money on and not have to set aside enough for an addiction.
Quitting was very difficult for me... even with vaping, but after getting through the initial withdrawals I did very well... and am now a non smoker..
That's what all this is about, and what it's for. To become non smokers...
It's an amazing milestone in life. Period. I credit God and vaping for the feat.