You're not a bad person at all! There are lots of ace people who are sex repulsed or just sex indifferent, so you are certainly not alone. Also, not all stereotypes are inherently offensive and they often exist for a reason (and "ace people don't like sex" is one of them). Sometimes people can go too far in trying to make clear that not everyone who is part of a community fits a certain stereotype, making the people who *do* fit that stereotype feel alienated. (Other examples of this I've seen this are "Not all gay men are flamboyant" and "not all bi people are promiscuous!" being said so often that the gay men and bi people who are flamboyant/promiscuous feel like they're doing something wrong/harming their community when that isn't the case at all).