Of course your opinion is not welcome to the person you are arguing with. Rare is the example of someone who actually values an opposing viewpoint.
I would suggest, however, that before you post in a topic, you take a moment to decide if the post is contributing to the conversation in a productive fashion. It’s often helpful to try to place yourself in the shoes of the OP; sometimes it’s just passion (anger, excitement) speaking, and they need a moment to cool off.
In any case, attacking the person instead of the message (“He just wants attention”) will always result in confrontation. I don’t think it takes prognostic fortitude to see that coming. If you can’t stomach the inevitable “get out of my thread” response, then consider not posting it in the first place.