What I can't figure out about blogging.

Why is it that the space we are given to work with on these blog pages is like 6-7" horizontal? If you have page items on the right side, those take up 2" alone, so really I'm trying to add images with wraparound text in a space of no more than 4-5 inches. I didn't buy 19" LCD monitors to use only a small fraction of that size with a bunch of wasted black space on the sides. There's no point to post any wide angle images either because all of the detail is lost when "Large" means 2" x 4".