I wonder how many pool-owners do the maintenance themselves? My guess is probably the same number as do their own lawn care.
The "bacteria at public pools" contingent would be in favor of a private one for sure.
A spa seems nice, especially for my creaky old muscles and bones, but aren't those work to keep up as well? My ideal relaxation would be a steam shower, but then, how much would I really use it during the summer months. So here I continue to sit with none of the above.