There’s a point in stacking sats where you get comfortable with the unit of sats.

Psychologically there’s a superficial benefit to not looking at .01 BTC as it doesn’t look like you’re holding shit.

Functionally you know 1 million sats is an easy calculation on the buy price.

Day to day you have a feel for the value of sats when you’re participating in v4v or even buying something via lightning.

It’s an interesting inflection point.