It's a syllogism. Please attempt to demolish it logically.
- I do not want others to hurt me. (I trust you cannot disagree with that.)
- No Homo sapiens, including me, is more valuable than another. (If I show you a hundred petri dishes with a hundred human blastocysts, can you pick out the most inherently valuable one?)
- Therefore it is logically consistent to treat others as well as I treat myself. (Follows from 1 and 2.)
So far your only arguments have been from a failure to follow the train of thought. You wanted a rationally consistent basis for morality, I provided you with one,