Our 23-year old son died two and a half years ago and while I'm sure SDAM helped me to get through the horrible immediate times, it's quite sad to be without a lot of detailed memories and events that I can look back on to relive the good times. On the whole, I'd rather have had a functioning episodic memory. (and my son)
I agree. It isn't a superpower, even if it does help us get beyond the bad times. I mentioned in another comment that my wedding day and the birth of my children are basically like any other day in my life to me. I know they're special but they don't carry much emotional weight.
Definitely do that. Nothing can replace your kids or take the loss away, but it's bloody good to know that I always ended each call and farewell with "love you" and he knew from my words and actions that I loved him. I have regrets but I'm glad that's not one of them.