Fair enough. I think I'll try to adapt to the road bike. ;-)
In fact, it's already feeling a bit more stable. I'm just worried that if it can't handle a few bumps in the sidewalk how safe will it be if it hits any crack in the road going above 20mph? Maybe lower tire pressure would make it handle road hazards better. I obviously am going to ride it primarily on the road. I was using the sidewalk to avoid riding on a busy street since I'm not used to the bike yet.
These hybrids look nice and that's probably what I should've got. I don't see any with horizontal top-tubes, though. That disappoints me.