When a scientist says he does something For Science!, what this usually means is he simply doesn't care about the answers to several important questions regarding his research, like:
Does it have any potential applications — that are not immediately lethal, full of side effects, potentially genocidal, ecocidal, omnicidal or mildly herbicidal?
Is there any way of gaining any replicable data or results?
Where will I get test subjects?
Can we make sure willing subjects are informed of all the risks involved in testing my dangerous untested invention?
Are these experiments ethical? Is Phlebotinum Rebellion likely?
Will it rise up against humanity and/or eat me?
How will I fund my research, and how can I make money off of it? (What? These are legitimate questions!)