Because of this, many of my favorite words are a little more suited to Elizabethan England (thanks, Will...) than to the present time: yon, wherefore, e'er, hence--you get the idea. (This is probably why my toddlers use the word "for" to mean "because," as in "I'd like a snack for I am very hungry." At least they don't say "sorely famished," right?)
But I shy away from using too many of these in my writing. I don't want the stories to be inaccessible to the modern reader, so I'm painstakingly careful that when I use an archaic word, it makes complete sense in context. And then half the time my critique partners have to tell me it didn't make as complete sense as I thought, anyway. But, oh, every time I cut one of those archaic words, it, well, pains me to the core. It's hard to make modern English flow as nicely as Shakespeare.
What's your opinion of archaic words? Do you like them? Skim over them? Use them? Avoid them?