My first week of MBPr 15"

It's my first week of using MBPr, and also I use MBP side by side. I love the text rendering on MBPr the clarity of words is beyond words. However, I am annoyed when it comes to Images, And I have no clue how this issue is going to be fixed, I had a tiny logo for my site 33x33px and doubled the size of it 66x66px and set the width to 33x33 and it now renders gracefully on MBPr, But hey! why do I have to do that, ---- my logo is not the only image in my site, there are a lot of images, some of them could be made larger, but some of them I have no control over. Like I fetch user avatar from Twitter API. ------ but the point here is, it's not prudent to scale images and re-engineer everything..... And I am reaching to the decision to question Apple, was Retina really required at all. Because as I said i use 2011 MBP side by side. I was more than happy with the rendering of text and images..... isn't this a mess? Images are terrible on MBPr period. And in order to fix them, web developers have to re-engineer everything, as I had just started to grasp responsive design and on top of that retina images now....?.... Looking forward to your feedback, unless there is something I am missing here.

PS: Please excuse my english, I actually can write it very good, but I am just in procrastinate mood right now. ;)