Anyone Else Feel Guilty About Changing a Sim's Genetics?

same here, i almost never tinker with genetics. well, almost... do you recall that male physique, where they have very narrow shoulders, wide hips and big bellies? this i almost always slightly adjust. or i hate it, when female sims get those huge bellies. they can be slim alltogether, but only that belly stands out. no matter how hard they exercise it won't go away. only then i tend to change it. nonetheless i do feel guilty.