Pedronicus wrote:My daughter is 3. We're still having baths together.
How many more years have I got before I'm arrested?
Arrested? Check with your local laws.
Beyond that, it really depends on the culture, upbringing.
Basically, when she starts "noticing" and "asking" questions you don't really want to answer.. she's too old. And note that there is a lot of variation there.
Other than that, before long she will decide she wants to bathe on her own, either because she hears other kids do it or because the tub is just too small.
I can remember a humerous bittersweet moment when my son (roughly 5) informed me he could "do it himself" and wanted "privacy" for his bath. A couple of minutes later, it was "MOM... can you wash my back, please?"