I am round but not always easy to find around, Yet sometimes I am found just laying around. People seem to want to get as far away from me as they can, but they always come back to find me in the end. I am not really associated with Hearts and Spades, but I am with Diamonds and Clubs. I am not sharp but I have been known to slice. You will never see me smile, but you can see my dimples. What am I?

I am not an article of clothing but I do have buttons. I am not an animal but I do have some form of tail. I do not speak, but I help others get their voice heard. A lot of people look down on me, others take advantage of me, by using me but not even showing the courtesy of making eye contact with me. I am useless by myself, but in the right environment I am not...in fact I'd say it is safe to say that just about all of you reading this have me close at hnad. What am I?