Heck, just do what you would be comfortable singing, or what your audience will be comfortable with (if you are performing for a paying crowd that you expect to treat that way).
If you change it, you may get heat for messing with lyrics as they were written. If you leave it the way it is, you may get heat for offending sensibilities.
Whatever happens, it's gotta be you that has to live with the results. If the lyrics bother you, by all means change 'em to something that doesn't (with proper explanations) or just sing something else entirely. We don't have to look your face in the mirror when you justify your decision to yourself after the performance.
Just my opinion.