personally, i love shrinking, pretty much everything about it, been in love with it since i watched alice in wonderland by disney (original not live action)
i prefer it over growth because i feel like there's more to do with shrinking then growth
growth is limited interactions, but which i mean, the things you can actually interact with is limited, once a macro reaches city size, all they can really do is crush stuff, cause everything is too small to do anything else with
but shrinking? there's endless things to interact with through the entire process, huge people, huge objects, huge bugs and animals and etc and etc
my personal fave style of shrinking is uncontrollable steps, by which i mean, shrinking over time without end (think incredible shrinking man)