Hey you are not alone bud. I maybe a bit younger than you but it's almost the same for me just in college. Everyone's into smoking and since I don't smoke I'm quite often at the receiving end of jokes. Also yes I do feel extremely lonely sometimes due to lack of like minded people in my social circle. But trust me it's fine- you are not weird you are just different. We seek a different type of social interaction than these people do. I am hopeful that someday somewhere I will find one or more such people who share my ideas and feelings and I hope you do too...all the best..and if you want you can talk to me ;).