most people would also want to own a tonne of gold. but there is only 170,000 tonnes of gold in the world.. so grams and ounces have to suffice, much like microbitcoins and satoshi's will have to suffice
Most people measure the gold in either ounces or grams. So if we calculate based on that, then there are some 5,465,500,000 ounces of gold, or some 170,000,000,000 grams of gold. That is almost 25 grams for every human being on this earth.
and there's:
2,100,000,000,000,000 satoshi's. that is almost enough for 30000 satoshi's for every human being on this planet.
so lets put it into context.
in america the average life savings is $40-$50k (obviously averaged out from the super rich to the super poor)
in england the average life savings is £50-£60k (obviously averaged out from the super rich to the super poor)
in scotland the average life savings is £30-£40k (obviously averaged out from the super rich to the super poor)
there are many other rich countries above 30000, and many countries below 30000 units of their local value
all in all on average it strangely shows that each person (based on units of value of their native country) is also proportionate to the 30000 satoshi / person. but remember within each community there will be some that have atleast double to 10000x the wealth of others meaning that some will have over a few btc(the wealthy), where others will be working minimum wage and only putting a couple satoshi's aside each paycheck for their "rainy day fund"