In the grander sense, I feel that wanting things fast is a sign of immaturity
Not at all, wanting things fast is simply giving into deep evolutionary processes. Back in the cave man days we lived in an immediate feedback environment.
Hunt, eat, shelter, be warm...
Now modern society is set up so that most of us live in a delayed feedback environment, work, get paid, save money, go on holiday, etc.
Yet biological evolution does not move as fast as societal evolution, so we are stuck whereby we know intellectually it is better to wait for most things, yet it feels better to get them NOW!
Actually great answer!! thanks a lot