That's how I always feel when I straighten my hair, too. I don't get my hair cut to look good when it's straight. I get it cut to look good when it's curly... So on the very, very rare occasion that I do it (literally, once a year) it looks so lame! I walk around embarrassed for like 2 days.
I spend most of my time with straight hair fantasizing about when I can make it curly again.
I have to straighten my hair next weekend. I might need to find a cool braid, too!