Because the RAF don't accept epileptics. Sad but true. Grrrrr. Maybe I wouldn't have got in, but I would have liked a shot at it - it's what I had always wanted to do and was why I worked hard to get to university. They referred me to the officer selection centre at RAF Cranwell after passing the initial interviews, but the MO down there said I would have to wait 5 years and be seizure-free without medication before they could accept my application. 6 months later I had my third fit in three years and I'm now taking drugs to control it. I'll never get in now.
Apparently, after talking to a couple of officers a few months later, they said I should have kept it quiet. Once in the service they have different arrangements, considering that I was not going for aircrew.
Life goes on and things could be much worse. I haven't had a fit in two years since starting the medication and I got my driving license back.

I don't let it get in the way of my life.
BTW, I guessed at 20. My eyesight is rubbish.
