My wife and I have 2 each-1 road and 1 mtn.bike. When we lived where there were many more off-road places to ride, we only owned mtn.bikes. Have given thought to a hybrid, but may just get a stem with more rise for the road bike. I also play guitar (4 of them). If you think some cyclists gather lots of bikes, you should see some of the collections of guitarists--saw one pic on a forum that one person owned over 50 guitars!