Sorry about your dad's passing. Like you said, memories will stay with you. I was hesitant at first because I was attached to the memories. I reliased that I can keep the photos and the memories. My motivations are:

1.) My data. Leaving it on Facebook would mean someone else is capitalising on my data even though I was not using it. It does not sit well with me.

2.)Setting an example. I have nieces and nephews, they are addicted to FB. So if I make a point, I need to show it by action. My family is in the Philippines. Their way of contacting me is through FB Messenger. When I deleted it. It forces them to use other apps like Simplex.

3.) I have out grown Meta and Mark Zuckerberg! Want nothing from his app.

In short, the reasons for deleting it must be important for you. Otherwise, you will waver when you review the photos and face the memories. It must be your courage — the reasons. ☺️