Does anybody have any experience with walk in bath tubs?

[NYC_SKP]

2. I think warpy's advice is sage. I'd never thought about it that way.

He could only enter with the tub empty. Then he has to sit there while it fills.

Just doesn't make sense.

What's good about walk-in tubs?

If a walk-in bathtub is on your wish list, a quick review of the advantages and disadvantages is in order. The first and most obvious advantage is that a walk-in bathtub makes bathing easier. In addition to the door, these bathtubs are designed to prevent slipping: Handrails, seats and textured pads help you keep your head above water and enjoy the experience without worry. Installing a walk-in bath could also raise the value of your home, especially if you live in a retirement community.
What could go wrong?

There are some disadvantages to walk-in bathtubs. First, you must enter the tub and shut the door before turning on the water. Besides becoming impatient (and maybe chilly) while the tub fills, you could have difficulty getting the right water temperature. Waiting for the bath to drain before you exit is another factor to consider. Although many of the walk-in bathtub manufacturers have addressed these problems with fast-filling faucets, fast-moving drains and temperature controls, these features add to your total cost.

A second concern with a walk-in tub is related to installation. Because the tubs are large, you might have to buy a new and more powerful hot water heater in order to use the tub properly. In this case, you must add the expense of a new hot water heater and its installation to the cost of the walk-in bathtub, which isn't cheap. Expect to pay anywhere from $2,500 for a lower-end model up to $10,000 for one with all the works.

http://www.angieslist.com/articles/pros-and-cons-walk-bathtubs.htm