I dunno. i think i'm just looking for advice. I kinda just don't care anymore. I got to work, sleep, do my basic things. but all of it without motivation. Like for example. i drive like a idiot, do stupid stuff on my bike, I'm an ***hole to people, and for some reason i just don't care anymore. I have friends but i'd just rather be alone. i dunno. what should i do?

Chemical imbalance. See your doctor. Please.

I am no psychiatrist and all I can do is share with you my observations and experiences.
1.You say you are addicted to speed. Maybe you are one of those natural risk-takers; it's the way you're made. I wonder if you shouldn't find a more challenging job/life style, something others would kind of fear, but is necessary and productive(I wonder if that is a reason some people are suited to dangerous foreign missions).

2.being a jerk to people: people can be irritating, and you are out of patience. If you don't care about yourself, you won't care about others. You're just unhappy.

3.you say you aren't depressed. Actually, you are, and have reached the point of having felt as much as you can bear, and have shut down. Self-anesthesia, is how I think of it.(been there, done that)One of the indications is you "drink and smoke in moderation": to be able to sleep. That's just more addictions that are self-destruction, other forms of self anesthetising. Sleeplessness is a result of depression, too. You say you're content! I would say you are not content with most of your life.

4.not suicidal? YES....you don't care enough about your life or the life of others not to endanger it.

5.One of my kids was a cutter. The only way she could explain it is that it made her "feel". And it felt like she was letting something out of herself, when she felt she couldn't get rid of anything else. She eventually tried to slit her wrists...twice. Maybe your dangerous driving(on the most dangerous vehicle on the road to be speading on)is a form of cutting.

6.You don't want to seek professional help because you can't afford it, don't think it will accomplish anything, and don't like people telling you what to do. After all the drugs and therapy and institutions, my child(who IS bipolar)found that interruption helped with overwhelming temptations that are harmful.

7.Speeding can certainly totally shut out everything else. Like one responder said (what a fun, positive person!), at least find a track where you can race and not endanger others.

8.You can support yourself better if you don't have to pay traffic fines.

9.Make a list of things you need to change, then rewrite it, numbering by priorities. Then write down, under each item, steps to achieving these things. You have internet...research jobs that would fit you. Obviously, this will be on your list. I know this is long. It's just that you are so young and may have so much time and so many options to carving out a life you love. So much potential! And don't neglect the spiritual. Nothing in this life is perfect or constant, except that. All mankind is born with this need to fill. God bless you!