Doesn't that describe most hot dogs? Tastes great, but filled with stuff you don't ever want to know about.
Much of the best food seems disgusting if you think too hard about it. Once I've learned not to be squeamish about where my calories came from I came to enjoy lots of things I might not have otherwise tried. There are only two things that I can think of that I have a lot of trouble eating (and in I really find it hard to swallow and have come to just avoid after having made a number of attempts):
1. Nattō (納豆). Fermented bean paste? Sounds right up my alley. I love chou doufu (stinky dofu) and do-fu ru (bean curd fermented with vinegar and rice wine to cheese-like texture). But every time I've tried natto, the consistency just made me feel like I was being forced to eat someone's vomit.
2. Pigs Feet. Well, at least the way it is prepared in Taizhong (also "Taichung"), Taiwan.
Braised pig trotters or pig knuckles are one of Taizhong's míng chī (famous food), so business colleagues and family will want to treat you to what they consider to be the best restaurant serving their city's most famous dish. And I just feel like I'm wasting it. I'll happily pick out the little bits of meat, but the chewy fatty skin is just very unpleasant to me. I really dislike it and have learned to just be honest and politely decline it when I can politely do so.
In both instances it is by far the texture, not the taste that turns me off. But I'm usually okay with politely eating food with textures I don't like. Like I don't like food with cartilaginous textures. Whether that be actual animal cartilage, sea slug, or straw mushrooms. Similarly, I'm not a fan of food with snotty textures. I'm not a fan of okra by itself or certain highly viscous sauces. But I can eat them.
I haven't tried to eat earthworms and I think that would turn me off unless they were chopped up, fried, and mixed with other stuff. But I've not had issue with some grubs and have no problems at all with grasshopper, crickets, and scorpions.