"Is there a reason why everyone uses 밀 instead of 믈?" Well, Korean alphabets aren't phonetic symbols, and the majority of Koreans write foreign names, words the way they can be reminded of the actual spelling. "에믈리" subtly grates on my ears. The reason would be knowable if you imagine an American speak English with British accent to another American, 에믈리 sounds like that, "I know better than you", so I'd recommend you pick 에밀리 up.

"愛蜜莉/艾蜜麗" in traditional Chinese ;-) 愛 means love, 蜜 means sweet, and 莉/麗 are all means beautiful =) (Sorry it seems you've asked for Korean name^^")

应该是爱米粒 哈哈 爱吃饭的意思 eat a lot

에밀리 is probably what you would want. It isn't too big of a difference though - If you pay careful attention you will probably notice that people pronounce the 'i' in Emily several different ways, if at all. If you speak fast the 'i' vowel sound won't even be heard, or it could be pronounced more like a 'u' (m -> u -> l is a more natural vocal transition than m -> i -> l). In this case they may hear something more like 에믈리 rather than 에밀리.

艾米丽