Peer Pressure. :P
Seriously, though - I probably would never have considered it if a friend of mine had not taken up pipe smoking almost on a whim last year. Four of us (two couples) were doing a writing retreat over Thanksgiving, and while they were waiting for us to make it up to the cabin, the other couple stopped into a tobacconist's shop in Estes Park. My friend's grandfather had smoked a pipe, so he had some nostalgic memories of pipes and pipe tobacco. As we continued to talk, write, and occasionally hang out on the back porch of the cabin, I realized that the smell was pleasant, and the process of packing, lighting, and smoking seemed relaxing. Our spouses likewise had no objections, so after doing a bunch of research (and finding this forum along the way), I decided that the positives of pipe smoking outweighed the negatives and bought my first pipe.
Then I lost my job. Pipe smoking may well have kept me sane during the process of searching for a new one, and studying for the certification exams that I'd been putting off (but suddenly had time for...). Now that I'm employed again, it's a great way to unwind and make a break between the work week and my weekend "me time".
And, as I discovered after overdosing on caffeine last weekend, having a higher nic blend in the rotation can help me get to sleep after a Dr. Pepper bender. :D