an honest question deserves and honest answer.
The answer to your question is really two fold.
1.) For me, it isn't so much a financial issue, but a space and marital issue. We will soon be moving out of this CRAPPY little house. Until then, while I do have money for more racks, I simply don't have the room, or the marital patience required to acquire them. Sure an extra rack could be put here or there, but in all fairness to my wife we are simply out of room at the moment.
2.) In my particular situation there is no reason not to. Will the snakes benefit from living in pairs instead of living by themselves? Who knows? I don't think they will BUT I also don't think it will be detrimental to them, or even be uncomfortable to them in any way shape or form. Keep in mind, these are healthy, established snakes that are showing no sings of stress. They still eat every single time food is offered and are growing just as fast as others in my collection of the same age that are living by themselves.
Please let me add that I am NOT a situation of a newbee keeper keeping two brand new Petco hatchling BP's together (when not even sure of the sex). This is an experienced keeper keeping pairs of same sized established females together without seeing any negative effects.
I must admit I am kinda surprised nobody has commented on the movies from Africa where they pull multiple females, and multiple clutches from the same hole. Please share your thoughts on this too.