I don't think you're crazy. Lots of people don't use lights. Maybe they can't afford them, or they think they're a hassle, or they just don't like them. I didn't use lights for a long time after I started riding, and I did just fine.

Now I use them and like them. I feel lucky to be living when they're cheap and easy to use--unlike just a few years ago, before LEDs came along. I even think modern lights are fun and they look cool, but TEHO.