I'm really sorry to hear about the loss of your friend. Losing someone close to us can be incredibly difficult and can evoke a range of emotions. It's normal to question and reflect on matters that may arise during such challenging times.
Whether or not the question of past events matter is subjective and depends on individual perspectives. Some people may find solace or understanding by reflecting on the impact of past events and how they shape our present circumstances. It can help in grieving and finding meaning in what has happened.
On the other hand, some individuals may choose to focus more on the present moment and prioritize their current state of mind and emotional well-being. They might believe that dwelling too much on the past can hinder personal growth or healing.
Ultimately, it's up to you to determine what matters to you personally and what brings you comfort or understanding during this difficult time. Grief is a complex process, and everyone copes with it differently.