Re: Missing the obvious
If you are prone to epileptic fits then sadly you are likely not safe to drive. This is seriously inconvenient for some people and would actually be one great benefit of automatic vehicles.
The lights, yes, are there to tell people you're there. It's a legal requirement to have them after dusk (you may want to talk to those people asserting cyclists don't use them). Flashing ones last longer so you're less likely to find your batteries die during your journey and are easier to spot.