I guess it is all a preference on to how much skin you are comfortable showing. For me, no one needs to see me in less than a tankini besides my husband. Of course I would look horrible in a bikini, but even if I didn't I still would wear one. I never let the girls wear them, and they don't care, so far. Well, the little one has one, but I have several suits for her, a bikini(because it had Daisy Duck on it, and she had to have one) tankini, and one peice .
I do have to say, that I do not enjoy seeing ladies with thong bathing suits(I don't think you can do that here anyway) or very teeny cover almost nothing bikinis. But I see nothing wrong with a bikini that covers all your parts, and nothing hangs out.
I also have to say, that even if I was smaller, I am sure my teenage son would be apalled to go to the beach with his mother in a bikini.