But Why Should I?

Dear Toulmin Method,
I appreciate how thorough you are when it comes to analyzing arguments, and I absolutely respect your intended purpose, that is to say, what you do. However, I'm having some problems getting motivated to make use of your... services. You see, I am studying to be a costume designer for the world of theater. It's true that theater performance in itself is a form of rhetoric, there is a speaker or speakers and an audience, but unfortunately there is very little argumentation in my future career.
When I meet with a director to discuss a production, the only times when I need to make claims and prove them, happen during conversations, which provides little time for me to apply your method. Argumentation and mature reasoning mean being willing to exhaust a claim until it's fully supportable, or you are forced to find a new one. Unfortunately if costume design followed these same processes, there would quite possibly never be another costume made. Costume design is about analyzing a character and making a decision on how to best represent that character, the process also has a time limit, meaning the faster a decision is made, the better for the production.
What I'm saying is that I will use you during my English class, because that is what I'm required to do. It does not mean I like you, or that I will ever call on you again. I just want to establish clear guidelines and boundaries for our relationship, so you won't get too attached and end up being hurt. That is all.
Yours for now,
Andrew Hill