I think that the same person can give different answers at different times of their life. I had a rotation of 7 really fine razors, including 2 custom Livi regrinds, an NOS Filarmonica, an NOS Friodur, an NOS World Master, etc. I compare my rotation to the time of my life when I wanted to date a lot of different girls. Then the LeGrelot 3/4 to full hollow ground came along and I fell in love. I just didn't want to shave with any other razor. I compare that to falling in love and getting married. At the time I had the idea of purchasing a 7-day set, I had already been using the LeGrelot exclusively for a while. Then I decided to expand the family and that's like having children.
I know it doesn't make any sense, but I like it.