After several years of permanent foreskin retraction, my foreskin coverage index has changed. I always wake up with a bare glans because my foreskin slips back during nocturnal erections. In my daily life, I don't even notice that I am pulled back. The only sensation I sometimes have is the feeling of tension from the bunched-up foreskin. The colder the climate, the more intense the feeling of tension. In warm weather, my flaccid state is 12 cm, so the foreskin is distributed more evenly. My deep shaft wrinkles have started to disappear. As for sensitivity, I find the coronal ridge very sensitive, especially if I pull my foreskin down with my left hand and grip my glans just under the coronal ridge.
In one study, I found an interesting fact: nerves transmit pleasure more effectively when the skin is wet. That means that with the use of lube, a dry glans becomes very sensitive, so you don't lose your sensitivity completely. Another study claims that the loss of sensitivity in circumcised men is a myth because the studies which claim that are of low quality. So, if you consider permanent retraction, don't be afraid that you will end up with a desensitized member. You will experience a shift in sensitive areas and lose hypersensitivity.
As for sharing dick pics, I've heard on one of the podcasts that men want to share their pictures because they seek validation and acceptance as sexual beings from others. However, usually, other people do not find someone's dic pics very attractive. Instead of seeking external validation, men should start to accept and love their bodies internally. Permanent foreskin retraction helps a lot in this case because it allows one to become more aware of his penis anatomy. I also appreciate that this site helps explore these issues together with other men in a supportive and encouraging way.