tantric, I have to say I entirely disagree with this statement: "violence solves most things". I'd basically echo drug_mentor's post. Violence may present a short-term solution to an immediate problem, but violence begets violence, and violence causes resentment and hatred from those the violence is being perpetrated against. Those are the repercussions and they are real, and can't be ignored. In this discussion, repercussions are necessary to include, as they are in any discussion of how one should act. In a true discussion of this topic, you have to consider them. Even in a one-on-one conflict, if the way you resolve it is to beat or intimidate someone with violence, they are likely going to want to seek revenge. In the case of children, if a parent uses violence to control them, those children are likely to continue the cycle of violence. In what way is a cycle of violence a beneficial thing to humanity?
Regarding inaction, I agree that inaction is a choice that can have negative consequences. I wouldn't espouse a route of inaction, but there are many actions one can take to resolve a problem. For example, you could talk to a person and try to work out your issues with each other. You could simply cut a person out of your life instead of beating them. You could work on yourself so that you don't feel the need to be violent against someone when you feel they've wronged you, and let the feelings of pain at their wronging wash over and pass through you because you realize it's their problem and not yours. Sure, you didn't get revenge on them, maybe you don't feel justice was done, but who cares? It's your life, if you're able to move on and let it go, what does it matter what happens to them? Why do you not feel that any of these routes (or any other route) is not the better choice? Are you wanting to live a life filled with violence? Because it's up to you whether you do or not.
Of course there are cases where violence is the appropriate course of action, highest among them probably being in defense against violence. I certainly don't hold some sort of pacifist view that violence should never occur. But I also think it is rarely the best option and in many cases is an option that leads to more problems than it solves.
Also I'm not sure why you interpreted D_M's post as condescending (other than maybe the statement about him being surprised as this attitude from a buddhist, but I mean, it IS surprising, aren't Buddhists generally supposed to be nonviolent? Your online persona until recently seemed to indicate to me that you would not agree with this view. Of course I don't know you but still.) Is it possible you're judging your own attitudes on this matter and it caused you to lash out at someone else when you interpreted them as being judgmental? Because I didn't see the judgment there.