Never had one.
Managed not to drown either of my kids.
(thus far)
it might make things easier, but it's
certainly not nessesary.
I always found the very best place to
bathe my kids as babies was the kitchen
sink.
We have kinda old fashioned square deep
sinks, too small for baby to slip down
into a horizontal position, but nice and
deep.
Also added bonus of being at a confortable
height, and having plenty of surrounding
bench-space for all the stuff, and to lie
babba on and dress them afterwards.
No carrying water too and fro and messing
about.
I had a baby bath on a stand thing, but it
was awkward to move, especially with water
in it, and awkward to fill - it did have a
handy tube thing to let the water out, but
that was only useful if you had it set up
near a drain.
The baby bath was long enough when they
were very small, but pretty shallow.
I hardly ever used it with my first, and
only once with my second.