It is totally up to you and your wife. None of us can tel you what to do. That and you sound like you know, and are well aware of the risks involved.
And last I heard, the stats were 17 times more likely, but that takes into account the fact that 60-70% of deaths on motorcycles can be attributed to alcohol and/or speeding. Either way, roughly 5,000 people died in the latest reported year on the NHTSA website. 5,000 pedestrians died being struck by other vehicles as well for what its worth.
RxZ (has a 6 year old, 3 year old, and 1 year old; rides when he can which isn't much other than commuting)