Flyhound
Pre-takeoff checklist
Multiple plane ownership makes aviation cheap. A large chunk of cost is infrastructure costs. You can get a hangar that will hold four planes and an apartment for less than a house saving you money.
The fixed costs include a lot more than hangar space. Insurance and annuals for 4 planes would be tough, but if I could afford the planes, then the rest should be easy. Unfortunately, I can't afford multiple planes. The interest deduction on my house makes it a cheaper place to live than renting an apartment.
Actually, not being able to afford more than one plane is probably a blessing. The diversity in the kinds of planes I'm interested in would make it difficult to stay really proficient in each of them. Flying on the back side of the lift/drag curve in backcountry operations is a LOT different than doing acro, or high speed XC work. Each aspect of flying requires a different mindset with different operational approaches. I manage to get about 130 hours a year into what-ever plane I own, and that is enough to stay competent in that plane. Having more than one plane would not generate any more time for flying, and that 130 hours/year would not be sufficient to stay on top of my game in 3-4 VERY different aircraft types.
Still, it is fun to fantasize and to whine about not having those fantasies come to fruition on their own.