Well you want you seats to be properly nurtured so that when you ride in it all the time, the seats get used to being dressed and everything. This way they get the dressing and conditioner in the leather and messaged in there when the seat first starts to get sat in all the time.
You dont want to never dress a seat then drive it for 30k miles and then start to dress it, by then the seats are already cracked and its too late. Get what Im saying?