Well, you sometimes have to medicate them and move them to clean cages. They are not cage aggressive - they are defensive of large creatures reaching in and grabbing them. Not all - some. I have a couple of females that are absolute sweethearts.
Most of my snakes eat more than once a week. They do not eat exclusively rodent prey and are fed smaller more frequent meals.
Bins don't work for me because (1) they are an extra step that I don't need and (2) I keep some large animals that will not go out of feed mode that quickly. Moving a hungry cribo or falsie to a bin and out of a bin does nothing but open me up to the risk of a serious bite. Since ingesting substrate is not a risk, why bother?
Many of my snakes get handled regularly and are also taken out to be props in speeches or other presentations. That does not dull the hard wired reaction by some to get defensive when removed from their cages.
The point is simple - a ball or carpet python or boa is not capable of sending you to the emergency room with a bite. Even non-venomous snakes like cribos and indigos can cause serious deep cuts and lacerations that require sutures. Regardless of how many times my snakes are handled or removed from their enclosures, I don't think that any of them find any joy let alone "love" in being subjected to it.
Since using bins entails risk to me and exposes my animals to potential stress, I see no "pro" in using outside of the case of separating pairs.
I only keep pairs together in species that do better breeding-wise when kept in such a manner. Any other reason usually involves convenience to the keeper, which is never a valid reason for the additional potential risks involved in cohabitation.