(used to suggest some action): You might begin by apologizing to her. (used to express politeness when asking for something or for permission): Might I speak to you for a moment?
Might, as a verb, generally refers to the possibility or likelihood of something happening or being the case. It suggests a potential action, ability, or outcome that is uncertain or conditional.
"why" can be compared to an old Latin form qui, an ablative form, meaning how. Today "why" is used as a question word to ask the reason or purpose of something. This use might be explained from a formula such as "How does it come that ...". If you meet an old friend of yours, whom you never expected to meet in town, you can express your surprise by saying: Why, it's Jim! This why in the ...
So, what, the different between "b" and "p" is supposed to have something to do with how the noise is formed in the throat area (in the larynx)? For me it's purely an airflow thing - "b" builds up pressure behind the lips which stops building the moment the lips are opened, while "p" keeps the airflow going a moment after the lips are opened up. This answer doesn't seem to make sense. (US ...
As to why someone would avoid the use of Daddy, other than family culture (my parents were always Mom and Dad; I have no idea why), well, yes, there could be some confusion, but I don't think the notion of censoring oneself from using Daddy is all that common, especially among parents. Is the primary usage of “Daddy” sexual now?