Why is it so easy?

I've been thinking about why it's so much easier for me to make healthful choices while I'm pregnant than when I'm not. I don't think it's just because my choices affect the baby, though that's the most obvious. I've concluded it's the lack of restriction. I feel like I can eat however much I want. So if after eating all the stuff that's nutritionally required, I still feel like some candy or ice cream, cool. Where as non-pregnant, I focus more on weight loss/maintenance and the idea that a calorie is a calorie is a calorie. So do I want an egg sandwich for breakfast or an caloric-ly equal portion of brownies? For non-pregnant me, brownies would frequently win. But pregnant me is realizing that when I eat healthfully, the cravings for the nutritionally void are not only fewer, but less intense.
And because it's fun, here's a side by side comparison of yesterday, 31w3d, and five weeks ago, 26w3d. It was actually kind of comforting to be able to see a difference because although it certainly feels like Baby B is bigger and stronger, sometimes it seems like my belly isn't getting any bigger. It is! And could I possibly carry any lower? :)


ETA: A friend wanted to see a pic from my last pregnancy. Here I am at 31w4d with my daughter. It's cleverly cropped because I didn't like seeing my big ol' butt, but I can still see in my face the fact that I'm about 20lbs heavier than I am now!