I love bathing I find it very relaxing
Oh yes the washing of the body is very relaxing.
I find just soaking in the hot water helps arthritis too
It can be practiced for therapeutic and ritual and even religious purposes!! 
Oh really? I did not know that
Throughout history, societies devised systems to enable water to be brought to population. Pretty amazing! 
I am sure they got creative to do that too
Yes, they used small basins and foot baths.