Tax pays for all those things you take for granted - Police force, fire stations, NHS, education. If people did not pay for these through tax, private organizations would make millions out of people who rightfully should have those services when they need them, for free (or if you count tax as the payment, a hell of a lot less than if someone was making a profit out of it.)
There are appropriate uses for force. For example, if someone is about to bludgeon your head in with a baseball bat, having someone to stop him from so by use of force is generally considered a good thing.
It's always sad for me to see a proud capitalist. After experiencing with loving and being loved, I came to the understanding that loving people is always better than using them. Yes, Capitalism ALWAYS ends in using people, whether you want it or not. I feel like there are no words to say to you in order to make you feel what I feel; the love for a fellow human being. There's noting I can do for you, and I'm sorry. You will have to live like this for the rest of your life, using and being used by people, not knowing you could live a better life. The only thing I can wish for you is that you'd at least be in the rich side of the society. While both sides live the lie, the rich at least live it longer. Socialist.
Okay, so, putting guns to people's heads and telling them what to do and how to live ISN'T using people? Socialists promote a society of violence; capitalists support peaceful coexistence and trade. From each according to his ability to each according to his need applies far more to capitalism than to socialism. Everyone has needs, and everyone has something unique they can provide others, and through trade all are satisfied as best as physically possible. If you say you don't support a society of violence and force then you are a capitalist like us. If you think people should be allowed to choose who they associate with and how you are a capitalist. If you don't, you're just evil.