Are high mileage riders more at risk due to time spent in the danger zone, or does accumulated experience add to youre safety?

Both. The more you expose yourself to danger, the higher your chance of something happening. But over time, you learn to identify the risks and act accordingly to reduce them. Like John says, it has a lot to do with attitude. The young crotch rocket riders like to slap those "No Fear" stickers all over their bikes. I had one that said "Know Fear". I've been riding on the street since the 70's and haven't gone down yet (on the street.. dirt bikes are a different story ), and that motto has served me well so far.

Cheers,
Brad


To be old and wise, you must first be young and stupid.