When I was much younger I smoked off and on for a few years. I stopped because, even though I didn't know I had ADD at the time, I knew that something wasn't right and it was destroying my concentration. Also, I had asthma. I figured that anything that left that much gunk on a bong or joint could not possibly be any good for my lungs. I also had serious questions about the black market economy that made the drug available.

Aside from that, if the smoking part is the only thing that worries you, you could cook it. Near the end of my using days I read somewhere that THC can be brought out in fat. Hence the good ol' brownies. I also experimented with sauteéing it in butter.