That isn't even a good attempt at a straw-man. Let's be honest, what qualifies as "my gain" in your argument here is "less death." So yeah, I'm willing to do what it takes to reduce death.
You're arguing that we should do nothing and let Putin go on his rampage unopposed, as if that will result in less death. To say that I disagree with you would be pretty redundant at this point, and you're not making good faith arguments, so I'm out.
You are making the assumption that people _must_ die. Not only that, but the people that must die should be dying because of sanctions, which means those that must die should be civilians.
The gain I mentioned was that you and your loved ones live. You and your loved ones get to enjoy a longer life with the price of other peoples loved ones dying from sanctions. You believe that's the best way forward.
If your children or siblings or parents had to die for you to live, would you choose that?