I'm 64, and still riding on two wheels (2002 FLHR) but I understand where you're coming from. I don't think I'd want a trike. I've always ridden solo (don't even have a passenger seat). The few times I've ridden trikes I was struck by how different they are ... steering is strange, they don't lean (duh), and to me, the twisties and sweepers are where the fun is. In short, I see them as being all the risk, and none of the fun.
But tens of thousands of trike riders would strongly disagree!
