I love linen. Part of the bargain is that you have to not be bothered by the wrinkling--some people can't get past it, but I don't care--it's just the best thing to wear on a hot day.
I have to say, pressed linen sheets are simply THE BEST on a hot summer night. I have slept on some at Italian relatives' houses and not forgotten the treat that it is, crisp and cool and smooth, mmm. I inherited a linen sheet set from my grandmother, though, and the one time I laundered and tried to iron them by hand, my husband walked in on the scene, me sweating, linen draped absolutely everywhere, and he said, "You're setting the women's movement back about 100 years right now." I later learned that linen pros send their sheets to professional launderers who iron them by machine (called a mangle).