i'm going to ignore your posting history and assume for a moment you aren't a contrarian debate pervert. what exactly is the point you are trying to get across?

Way to enter a discussion. I'd prefer if you could keep it civil.

you agree that animal testing is fundamentally wrong, but [...] we need to keep the animal testing?

This might sound off topic, but bare with me here: Do you agree that CO2 emissions are fundamentally wrong (leading to a mass extinction event, etc)?

(I will continue this argument under the assumption that we can all agree on that) And do you concede that these emissions are, for the foreseeable decade(s) inseparable from modern human life? Not that they are a basic necessity to survive, but that you and I are indirectly causing such emissions in one way or another for every day that we are alive and continue with our day to day actions (heating, cooking, buying stuff, transportation, etc). This may change in the future, but let's focus on today.

(Again I assume that you are not the 0.1% of the population that lives without any modern amenities (you have some way of writing comments on the Internet for example), and will continue my argument) Given these two basic building blocks of our mutual understanding of the world I would like to rephrase the question you find so inconceivable:
"you agree that emitting carbon is fundamentally wrong, but we need to keep emitting carbon?"
Neither you nor me have committed suicide, so there must be some reasoning that is acceptable to you, which justifies keeping a human alive even though it requires continuing something that is fundamentally wrong. Of course, different people draw the line at different points. But I hope I was able to show you that, even if you draw the line differently for this issue, the reasoning is not completely foreign to you.