OP-er, do you mean attack in the sense of attacking the person airing an idea or position? Or do you mean attacking the idea/proposition, not the person who makes it?
If you mean the former, I'm not terribly given to that other than with regard to individuals who don't exhibit the expected degree of mental acuity when expressing their ideas. With regard to the latter, I "attack" the idea because as the individuals presents it, it's lame, and I'll criticize (constructive or deprecating) the proposition regardless of whether I agree with it because there's no rational basis for leaving to stand unassailed a poorly developed idea, no matter one's personal affinity toward it. I do that because I take public policy design, enactment and implementation, along with governance and leadership quite seriously.
Perhaps that's a personal thing. In my life, since I was a child, I've never found success from doing things half-assed, so I don't have much, if any, tolerance for slovenliness when others -- family, friends, colleagues, or random people -- display it when interacting with me. I don't disrespect others and their ideas by not giving them the best consideration I can, and I don't care to bother with folks who don't do the same.
I mean, at some point, one has to commit to always striving in all they do to be outstandingly, to manifest excellence to the best of one's ability. That's what living is, isn't it? Life isn't about squeaking by; it's about flourishing by taking the bull by the horns. I don't one's advancement and growth stops when one stops doing so, and once one reaches that point, one is a drag on society not a contributor to it.