When people stopped believing in any kind of afterlife, the saying "You can't take it with you when you go" stopped meaning anything. If you don't believe you've got anywhere to go after death, then who cares if you can't take it with you? You don't need it when you're dead, you need it now, when you're alive, and who cares if you die with a lot of stuff or a little? In that mindset, it matters that you have had a comfortable life, not that there's no eternal safe-deposit box for your stuff when you snuff it.
Mokalus of Borg
PS - Which is not what I personally believe, but I do follow the logic.
PPS - It's a difference of assumptions.