Supposing they were the only two rabbits in existence and you wanted to preserve them from extinction.
Would you choose to continue breeding them, even if their lifespan was foreshortened?
Further, your illustration depends on the JW concept of living forever in perfect health being the original purpose for man.
The WTS are the ones who suggest that the alternative to eating the fruit was everlasting life. The bible doesn't state that.
We might be working from different directions, but at least we're both helping challenge JW conceptions in our own way