Sure, smart quotes look better. But why not give us an option to disable them? I post a lot of code snippets to this blog and swapping out normal quotes to smart quotes makes it tough for people to copy and paste.
Apparently I'm not alone in having this issue. I went out Googling to see why it happened and what I could do to fix it and found a plugin called WPUntextureize that takes care of disabling smart quotes for me.
Ryan