Posting photos of yourself is your own prerogative. If you're happy with it and want it on the internet nobody should tell you otherwise. Unless of course, you're a woman celebrating your body then men will feel that masculine urge to comment on your body. What happens when it's a friend making rude comments about your wife's body to you behind her back?
AITA for telling my friend his wife couldn’t pull off a bathing suit
I have been informed by my friend that my wife seems to have a lot of body confidence on a few occasions. She posts a lot of photos on Instagram in dresses, crop tops, and now that it is summertime - swimsuits. I’ve never had a problem with it. I think most girls in their mid-twenties do the same thing, but my friend has been making weird remarks to me about her posts since we got married.