8gb was the standard NINE YEARS AGO on MacBook Pros back in 2014. The fact that 16gb isn't the bare minimum today is a joke. 32gb is optimal even though you don't NEED it today; you may in the future and it sure as hell will help trying to sell it once you need to upgrade.
If you get yourself a relatively premium laptop today it should last you close to 10 years; I say that because the MacBook Pros from 2013 are still more than capable for almost everything.