In many jurisdictions, completing surgery is a milestone that allows individuals to legally change their sex marker on documents like birth certificates and driver's licenses. Relationship Dynamics Transgender Terminology | University of Southern California

Regret regarding gender-affirming surgery is statistically rare:

Some post-op individuals choose to live "stealth," meaning they do not disclose their trans status in their daily "normal" lives. This can offer a sense of safety and relief from past trauma, though it may also lead to anxiety regarding accidental disclosure.