My flight yesterday in the Legacy (2000 nm Daytona to Calgary) was marked with light showers all over near my stops in Alliance NE and Great Falls MT.   It was a decision to push through these showers (you could easily see the other side) or detour around these areas.  I decided in most cases to stay low (4500 feet from Florida) and get the plane washed.  I was VFR the entire trip because I can make my own decisions on altitude and routing.  I did have flight following most of the way.  In two cases, lighting did strike within 10 miles in heavier rain areas.  I suppose it could have been in my area too since I was in precipitation.   I don't think you have to be in a thunderstorm nor exercising poor judgement in order to risk being struck.