My wife is a non-cyclist who regularly works 80-hour weeks, hates to sweat, and is so tight she squeaks when she walks. Maybe that last part is just her new shoes... Her 7 year-old bike has about 10 miles on it, but I always keep it clean, adjusted, lubed and aired-up so it will be ready if she changes her priorities some day.
Of course, every dime and every minute I spend on cycling (or any other hobby) is a point of contention with her.
However, I think she appreciates the lost weight, lower blood pressure, and the fitness that I've gained from cycling. Somewhere. Down deep. Way, way down there.
All of that helps explain why I need and love to ride as much as I do.