assuming for the moment, that there is a god and a heaven and an afterlife in which you retain consciousness of your time on earth.....
?? how does god handle people who have 2 or 3 spouses, serially, who loved each other & were faithful?
?? when families are reunited what ages are used? do infants grow older or are those who die young left as youngsters forever
?? are hip & knee replacements, eg, still there, or does everyone get a new body
the idea of a heaven is harder to justify in any rational way. time travel would be easier to imagine
and if we dont retain a knowledge of our earth life, then the concept of 'loved ones' ceases having any relevance