I'm sorry, but who invited you to reply on this thread from the first place? I don't. Why do you think your reply is so important? maybe it's a time to go down from the tree you are living on.
It's an open forum and by the title & subject matter you have invited not only me but others to join. If you only want a few then imply, infer and properly state that in the title or within the first entry/post to narrow the field of viewing and response.
If you are looking for your next or current argumentative paper for class or a persuasive essay keep working at it as you were the one being condescending here, I merely asked questions to a specific agenda you had omitted, be it by design or just in a hastily rant. If the goal is something entirely different it's called or could be called a creative writing paper (maybe an online class here now).
To further your subject, I have been looking at purchasing a MBA, though you compare a 13" (we shall say Mac) to a 15". I could also compare via your implied subjective list and title with how can you do anything worth while on a 15" when I use two monitors myself (pretty self-centered on my part then huh)?
You still didn't answer my questions but deflect as you may…Just keep in mind you first purchased the 13" MBA which contradicts all your "as to" list so was it money related for you then or choice? MBP had better options then and you still chose the 13" MBA which I don't think this makes a good supportive paper for you either at this point about this subject but I'm open to all input, nice and easy
Wait, that reminds me as I type from it now, I have my 17" MBP and until the 15" rMBP it was the five bedroom house of the group, so why would you buy a 13" MBA back when you did if screen quality mattered or options when the 17" (by your very comparative words) had a better screen and options? Should one infer you needed time to get stronger, I joke but you keep bringing this up.
You seem to be stuck here a bit for some reason but then you go back to "deflecting any questions/replies" you don't like or at this time are unable to deal with in a civil matter without lashing out multiple times at multiple folks here.
That very statement above would be demeaning to others because I don't feel the same as you do and what type of Mac a person has is based on needs, maybe wants as well and what they can afford or just straight up like. So, the why question, travel with 4-6 bags of gear, now add a suitcase and then another person if need be and the MBA be it the 13" or 11" works nice sitting in the front seat of a vehicle, plane or even on a tether table to view stuff in tight places. I find my 17" just fine though students make up the most issue with weight so why do you think that the 13" line was the greatest selling Mac in the laptop lineup? Wonder why?
Price, portability and all around good value for the price. Right now the screens are the bonus but at a price because you can't expand on either rMBP and I do think you are ignorant about what this lineup use to be and for most still is, people who need power and more power later with room to grow.
Unfortunately, you seem quite angry or unhappy for a person who should be quite happy with either choice, yes choice both of which you made as you pointed out to which you chose not to answer thus far.
I like trees

When it's time (not it's a time) And I will (it's get down, not go down) remove myself from the trees when no one wants to chop them down to their size to see their beauty at a lower level instead of from the trees view all around, just how they were intended to grow (food for thought free).