> Capgains are purely fictitious ...
But only in the large; in my individual account, they are quite real to me. So psychologically, 401(k) "winners" are less likely, I think, to worry about other kinds of savings. Stocks go up, stocks go down, but over the last 10 years, nearly everyone who owned mutual funds in 401(k) accounts has "made" a ton of money.
And those winnings feel like savings (since they aren't presently consumed).
/jordan