Picture this scene with me. You’re walking along and at the end of the road you see two gates- One is very large, it looks very pleasant and easy to travel on.
If I apply your logic, I can take for example Napoleon, who was butchering the whole Europe during the first quarter of 19th century just because he disliked Great Britain, and at the same time he did a lot of good things for France (legislature, culture, science...),