i forced my sister to use ls. ;)
i think she actually likes it, or at least doesn't care. however she would never try to create a theme herself, although she has already done some nice gfx for me.

in contrast, my girlfriend always says she couldn't understand why i need to have it all that fast, she doesn't mind to wait for explorer crap... i think besides that she simply doesn't need something like ls, she way too adicted to explorer (i should have known her earlier to avoid this ;) ).