I also like that daylilies need very little in the way of maintenance, and they will produce flowers even in the driest years. Of course, they thrive when regularly watered and fed a general fertilizer, but I have some daylilies that I completely neglected while I was still in graduate school that never fail to return each year.
My wife and I, however, are of two different minds when it comes to separating daylilies to split into new colonies. I prefer the thick clusters with bunches of blossoms, while she likes to spread the color more widely. Of course, splitting daylilies eventually gives you multiple stands for the price of a single plant, but there is the lag time to consider as the divided plants grow to the mass of the formerly joined cluster.