Bad memories are not good to have. Mistakes will happen; avoid the ones that you can. Politeness will produce more good memories than bad ones. If you spurn the day-old discount store cake, the purchaser might shove it in your face--literally -- might be a bad memory.
You won't have 1000 years of boredom if you stock up on things to think about, rethink, mull over, remember fondly, recite, etc.
You understand, I hope, that this thread IS a joke. It was posted in The Lounge.
But the bit about non-physically anchored minds plugs into the joke. There are all kinds of serious threads speculating about God, the soul, life after death, other universes... all topics about which we know nothing and about which we probably should not be chattering away about as if they were certainties.
But it is also true, and in line with having a good life that is worth living, that we should seek out good, rich experiences. Of course: sometimes we have to clean the oven, rake up all the leaves in the yard, mow the grass, do laundry, and other such boring jobs--never mind the brightly lit hells of the modern office park. But when we can, we should opt for better.
A lot of the time when I was working and dealing with life as we know it, I had neither the time nor the energy to opt for much of anything. Then when I retired, I found I finally had the time to read more books, listen to more music, enjoy time passing.
Happy Birthday. Which number was it? Chocolate cake?