Most people say they don't remember anything from their time in diapers, but I still have quite a few memories. I remember during my toddler phase when my diaper was checked for number two's and even for a split second, I remember my diaper being changed as a stare at the ceiling of the daycare center, then look to the right to see another child having his/her diaper changed. Both of these memories occurring at a day care center. I think these memories though, have nothing to do with my fetish.
Several years later when I was 6, I was going to a larger day care center (One of those day care centers with multiple sections designed to cater for children of different age groups). I remember I acted up quite a bit and probably got into too much trouble. One day, one of the day care teachers told me "If you keep screwing around, I will take you to the nursery where you will be placed in diapers and put down for a nap with the rest of the toddlers," or something to that effect. I don't remember exactly, but I remember the key words. She was bluffing of course; however this most likely caused the start of my fetish, and is something you should never even threaten your kids with.
Later I was moved to a different day care center, which was much smaller and mostly catered to children still in diapers. There were baby diapers everywhere in that place. With my curiosity, it was inevitable that I would eventually try one on.
In conclusion, the damn day care centers did it. There was nothing wrong with my childhood. No traumatic experiences. I love my family very much.
As a follow up to that conclusion, these experiences led me to the DL perspective in that I enjoy diapers for their great sexual stimulation. This is now combined with BDSM fetishes, but these came later after I discovered the internet.