Well Guys things have changed.

[Bogertophis]

I should also say another reason is cost of husbandry. with the smaller snakes it is much cheaper. especially when it comes to caging.

Well another thing to consider (to be honest here) is that the larger the snake, the larger it's enclosure is to clean up the larger messes, and over the years, that can
get "old" no matter how much you love your snakes. Yes, food & cages for big snakes cost more, but if you work a lot of hours, how thrilled will you be to clean up a
larger mess, or hold a snake that takes more effort, when you come home tired? So many factors & we all have to decide what fits our life best when it comes to pets.
When we don't "think ahead" we can feel burned out, with not enough time, energy, money, space, etc. to go around.