Today I donated my 2001 Trek 820 to a group that fixes up bikes to give away to a city Youth program.
While this is technically N-1, as I have 1 fewer bike now than before, I had replaced the use for the 820 last fall. I use the 820 at work, for lunch-time rides and going to campus meetings. Last fall I purchased a folding bike, to keep in my office, to use for these purposes.
Soon to be another N-1, as I need to get rid of my early 80s Panasonic DX, a lugged steel road bike that had been converted into a flat bar bike. Downtube fiction shifters, 52/42 double crank, 10-speed. Its in my garage. I've only ridden it 4 times. Paid $30 for it.
After I get rid of the Panasonic, I will still have 6 bikes.
RANS Stratus recumbent
SUN EZ-RIDER AX recumbent
Fuji Absolute 1.0 flat bar road bike
Trek 7600 hybrid (may give to my daughter)
That's still too many bikes.