It's not like you won't enjoy your experience. It will be an excellent note-taking device if anything else. But my argument was that if you wanted a laptop experience, and wanted to do light gaming, the Macbook would have been the better choice. And a pure tablet experience would be better enjoyed on the iPad or an Android tablet.
Anyways, enjoy your new purchase. If all else, you have 2 weeks to change your mind
One more thing, have you considered a Chromebook? I would have gotten one had I not needed something like the Macbook to program on. I know you said you wanted to do some gaming but it's just another thing to consider if you could weigh your needs and wants.
But anyways, the deal is done. But for anyone else in the same boat.
Question for OP: While it's a bit late to ask, what is your field of study if I may ask? That could have a bearing on your choice.
I'm majoring in political science; lots of essay typing, online research, and book reading (probably a bulk online). Yes, you're right, I do have the 2 weeks, and honestly, I may just go ahead on a return. Though the device is amazing in concept, it's only great when it works. I'm experiencing too many annoying problems which I've been reading are common among Surface users - blue screens, battery sleep problem, graphic driver crashes, keyboard not working consistently, excessive light bleed just to name a few. It's evident that the Surface Pro 4 is still a beta product.
However, I still can't justify the Macbook Air with the inferior display. It's not horrible by any means (better than most Windows laptops), but side by side to the Surface and other Macbooks, the display is an embarrassment. Maybe I'll wait to see the 2016 models... just sick of waiting on a non-existent release date.