Narrative speaking, why didn't Data ever adopt a more human look? One would think that if Data's quest was to become as human as possible, one of the first things he would do, would be to adopt a more human look. This would allow for him to interact with humans a lot easier, as he would more easily pass as human, at least in appearance.
First off, it was clearly within his ability, as he did this for Lal. If anything, Lal was even more difficult to retrofit, considering her prototype look. So, Data should have been able to do the same for himself.
Next, in Unification, Data was altered to appear Romulan. In future episodes, he could have done the same to appear human. SO even if there were a canon explanation why he could not retrofit himself ( a big stretch, bit for sake of argument), he could use makeup .
Then there is the argument that Data could age gracefully. One of the main reasons Brent Spiner asked to kill off Data in Nemesis was that he felt that he could no longer play the role of an ageless android, when he was aging in real life. I don't know that I buy that, because we see that there is an example of Soong-Type android, Juliana Tainer, not only aging, but looking human. Data could more easily blend in and age with those close to him, and experience how the world reacts to him as he ages, which is something an android who could live the equivalent of many human lifetimes would need to help him understand the process of aging, which is essential to understanding humanity's finite time.
Finally, in First Contact, the Borg successfully grafted living skin on Data. Why didn't Data continue with this? Human feeling and sensation with living tissue would only serve to help Data understand human emotion by the sensation of feeling as humans do. Data may become more vulnerable through sensation. Feeling pleasure, pain, and even sensuality would serve to help him understand emotions, especially after having the emotion chip installed.
First off, it was clearly within his ability, as he did this for Lal. If anything, Lal was even more difficult to retrofit, considering her prototype look. So, Data should have been able to do the same for himself.
Next, in Unification, Data was altered to appear Romulan. In future episodes, he could have done the same to appear human. SO even if there were a canon explanation why he could not retrofit himself ( a big stretch, bit for sake of argument), he could use makeup .
Then there is the argument that Data could age gracefully. One of the main reasons Brent Spiner asked to kill off Data in Nemesis was that he felt that he could no longer play the role of an ageless android, when he was aging in real life. I don't know that I buy that, because we see that there is an example of Soong-Type android, Juliana Tainer, not only aging, but looking human. Data could more easily blend in and age with those close to him, and experience how the world reacts to him as he ages, which is something an android who could live the equivalent of many human lifetimes would need to help him understand the process of aging, which is essential to understanding humanity's finite time.
Finally, in First Contact, the Borg successfully grafted living skin on Data. Why didn't Data continue with this? Human feeling and sensation with living tissue would only serve to help Data understand human emotion by the sensation of feeling as humans do. Data may become more vulnerable through sensation. Feeling pleasure, pain, and even sensuality would serve to help him understand emotions, especially after having the emotion chip installed.