In the "olden-days", I used to keep a clone-Mother for a while and when she got old, feeble, "cranky" and hard to manage, I would flower her. At flower, I took another cutting from the original clone-Mother and raised that "new" clone-Mother.
In "those olden days" top-quality seeds and clones were hard to come by sometimes. With seed you never knew what you were getting. Clones, on the other hand, guaranteed quality but were tightly held be deep-woods Rasta Masters.
Now, with all the available seeds and strains, unless you really like a strain it makes no sense to keep a large group of clone-Mothers. I still clone though - all the time - you never know when a particular phenotype of a strain will offer a diverse 420 bounty.
I need a lawnmower for my advanced-stage veg tent.
CRAP!!!
I need to strike the cannabis lottery...so many excellent strains, so little time...