Buy? That hadn't occurred to me. I built mine, and I'll build the next. Mind you, when I build that one, I'll be retired.On the other hand, how many people need a specially adapted bathroom because they gained weight dedicating all of their energy to a job in order to buy a specially adapted bathroom in their old age? (I am thinking of family members)
But there will come a day when I am less capable, unless I die first. I prefer to be ready for that day, rather than try to cobble a solution when it is needed, AND I'm less capable.
I've lived in a one room cabin, with an outdoor cold shower and an outhouse. I've lived in a larger cabin, with no power, or running water, and an outhouse. I have lived in standard tract housing without power and/running water. I understand what the range of solutions are, and know what I'm willing to do to get what I want. My optimal solution is not optimal for most folks...