Personally I like how goofy their faces are - Burms too, they have extremely goobery expressions. I was a little scared of snakes when I first got mine, but it's difficult to be too scared of such a goofy, puppy-dog face. I know other people might prefer a more intense looking snake like a blood python, but I find them more intimidating. In more general terms, their simple needs in term of enclosure and their love of being comfortable and just chilling in a warm spot for the vast majority of the day were big pluses for me - I don't need to worry about them needing something from me, most of the time I check in on them they're both happily napping away in their caves. They're very relaxing to handle too, occasionally they'll want to get on a shelf and knock things over but they're generally very slow-moving and calm, just curious enough to want to check things out but very easy to manage. Some people find that boring and like a more active and visually-focused snake, but for me I like the relaxed pace they have about everything.