One of my hobbies is android programming, specifically on the kernel/hardware level. I enjoy the challenge and discovery of working with new equipment, so usually purchase new phones when they are brand new if I can't get a developers preview device.
I also have 4 lines, one on each of the major carriers, so defrays the cost of purchase some with more upgrades.
I don't own a single apple product.
My last 6 phones were (1) Samsung S4, (1) Samsung Note 2 (4) Samsung S3's