Reddit, what is your safe or unsafe addiction that people think you are crazy for??

I'll start. For me it is cars and music preferably together. I spend most of my time researching great things I could do to my car to make it faster, perform better or have a little fun with the stereo system.

Another thing many people will look down on me for, is street racing. My passion is to beat that fucker, either by an inch or a mile.

These addictions keep me sane, I'll go on 2-3 hour long drives all by myself, music cranked and just think about anything and everything. All my friends think I'm crazy. Other than one who shares the same passion for cars and music.

So reddit, what is your addiction!?!?