It is also a matter of lifestyle and location. I live in a urban setting and $100 doesn't go far. Just what I spent yesterday:
$3 morning latte for metro ride
$9 take out lunch
$24 pick up dry cleaning
$18 taxi to restaurant
$60 (my part) dinner and drinks with friends, wine is $12/glass*3, cheese plate and entree, tax, tip
$18 taxi home from restaurant
I would be schlepping to the ATM every day at that rate, instead I used my points earning credit card and will have the protection of AMEX.
I don't always check my balance every day but it is something I do often and it just lets me know where my money is going.
True, but you still wouldn't need a wad of hundreds for that. The only thing I would have paid cash for out of your list is the latte, lunch, dinner, and taxi and the only time your visa would have been out of your site I would think would be for dinner. To each their own.