Your hair looks beautiful. I'm with you and have been feeling the same way lately. I also think it goes with the type of clothes I wear more. I've been alternating between straight and curly almost every other week for the past 3 months now.
Don't get me wrong I like my curls but, it's so much easier and less time consuming plus it's long when straight and that's fun for a change too. If I didn't workout so much I'd wear it straight all the time it's just the style I'm into right now.