Not enough!

All joking aside, I have two Dahon folders for the trains (one for me and one for my SO)
Pedalforce CX1 and an old MTB I got for free from a family member for commuting. The MTB is for snow days, otherwise I commute on the CX1, which is most of the time.
Trek Madone 5.9 when the weather is nice and I want to go fast
Pedalforce CG2 - my sons bike
KTM Chicago - my daughters bike
KTM Velo - my wife's bike (I bought it for her birthday)
Schwinn Continental - converted to SS/FG (parked in the garage of my mom-in-law in the US
Norwid Aaland - which is currently on order. Custom sized stainless steel with Rohloff, S&S couplers, disc brakes, hub dynamo, belt drive etc etc this will be my future commuter as well as my touring/world touring bike

My car is parked under a carport, because my garage is full with bikes.