You are not breathing in the 4000 other chemicals in cigarettes which include carcinogens, MAOIs, carbon monoxide, tar
Your taste buds and sense of smell should get better to the point where cigarettes taste like crap if you happen to try one
You will smell better to other people and your mouth won't taste like an ashtray
As long as you don't overdo
vaping or overdo nicotine, your breathing and sinuses should improve
You can take just a few drags without wasting anything, or more drags than a cigarettes would be if you want
You can sneak a vape in a public bathroom stall by just holding the vapor in your lungs longer then blowing it into your chest.
You will feel good about getting away from cigarettes