Me too. I always wear something. Right now I wear amber lenses that darken based on ambient light. They are super clear (whe clean) and light-weight so I dont even know I have them on 'til I take them off.
If anyone is interested, they are Cat-1 Prologue that I got from Performance for about $25. They came with amber and clear interchangeable lenses. The venting is pretty good until you stop at a light, then they fog but clear right up when you start moving again.