I just don't like the feeling of wet fabric on my stomach. That feeling really bothers me. I am not in any way seeking attention--I think ti is weird that you would even assume someone who wears what is a common choice for pool/beach wear to be attention seeking.
Truthfully, I have gained weight in the last couple of years, and I am not really a "bikini body" any more--but I still wear one. I wear it because that feeling of wet fabric over my belly button bothers me so much that I don't enjoy the pool or each in a one piece or tankini.
I guess I am not particularly modest--but then I never really have been about anything. Indecent though? Geeze that is a pretty harsh thing to say about someone whose clothing choice doesn't match what you, personally, like to see.
And if someone pulled the string (though most of my suits are a clasp in back), and I were fully exposed? Well, I think the jerk who pulled the string would be the bad person in the scenario--not the person wearing the suit.