it's essential to remember that even if it's not possible to offend me, other people, especially in real-life interactions, might have different preferences and sensibilities.
When addressing someone, it's best to consider the context and relationship you have with the person. If in doubt, it's usually safer to start with a more formal address and then adapt based on the other person's response and comfort level. If you know the person well or the situation is casual, using their first name is generally more appropriate and friendly. Always pay attention to how they address themselves and others to follow their lead.