Should I get a Walk In Tub?

I have been deliberating for days as to whether I should get a walk in tub or not. I have looked at tons of walk in tubs already and I think it would be a great idea. They even have walk in tubs that are huge like spa's. As you get older it becomes more and more of a pain to step over the side of the tub. A walk in tub would make getting into the tub so much easier. They are kind of expensive so now I have to find just the right walk in tub for me.