>Sleeping in a bed is an arbitrary habit that you've grown comfortable with, why not sleep on the floor, or in the bath?

Because your back will hurt, so not that arbitrary after all.

You will have no adverse effects of using an alternate method to step in the debugger.

>The fact is that when developing and debugging, the function keys represent the most efficient way of stepping through code

Citation needed. They are at best a random accident. Any other keys or key combos could be used.