[mrkeen]

Try playing with the metaphor a bit more broadly. Is it luxurious for a behaviour to have its own dedicated class, or a c file to have its own header file?

> If you can somehow charge an insane premium for this BFF setup, then have at it. I'd rather grab my own coffee.

In this metaphor, you're the coffee shop owner. If the customer grabs his own coffee, that's fine, but he should probably grab it from home. It is not reasonable to expect the customer to enter the coffee shop, pour his own coffee and operate the cash register.