Same here, I love how relaxing and charming SimCity is. I think Simcity 2013 really nailed the charm (if nothing else). I don't know what the general opinion is on the cartoonish graphics and filters, but I really like them. I would often let the game run for hours just to watch, like a fish tank or something, because I think visually it is gorgeous and it looks so alive (and maybe because I felt I needed to get my money's worth somehow).
I'm very excited to play Skylines, the gameplay seems a million times better in every way. But the screenshots just aren't as satisfying to look at, and as silly as that may be, that's a big part of SimCity to me.