Re: hijab
This might help.
Surah Al-Nur (the Light) (24:31) in the Quran states: “They (the believing women) should draw their head coverings over their bosoms…”. . Surah Al-Ahzab (33:59)
Anyways, you’re right it’s a personal choice. Do it, or don’t. Your choice. No compulsion. But don’t go about changing the rules according to your preferences.