Bitcoin is for hodling, not transacting (sodling). Delayed transactions are not a bug, but a feature: helping you hodl.
I'll give you an example, show you what I mean:
Say you decide to reward yourself for years of hodling with a pair of alpaca socks & some honey and/or honey products.
Your smart bitcoin wallet senses this, and automatically (and virtually instantaneously) calculates the tx fee required.
Required to have your bitcoins safely returned to you (or, rather, to it) in 72hrs, that is.

"Any sufficiently advanced technology is indistinguishable from dark magic."