I drink one large mug of coffee each morning, and none the remainder of the day. I am aware of the quality of the coffee (fresh-roasted, freshly ground Yirgacheffe, etc.) for only about the first 3 or 4 sips. After that, the rest of the mug is just coffee. I've decided to go with much less costly coffee, and forego the few sips of pricey, gourmet pleasure.If it were me, and I wanted caffeine, I'd toast some yaupon holly leaves and grind them with the seeds. I think yaupon holly is the only caffeine producing plant native to North America. I have plans for next summer's garden that involve a few different varieties of okra, and stuffing the leaves like grape leaves in dolma.
When camping or backpacking, Taster's Choice instant coffee has been just about the only coffee I've consumed over the decades. I gag for the first few sips, then forget to even notice that it's not presentable coffee.
My mother entered adulthood during WW2 and the post-war epoch of "modern convenience". Instant coffee was just about the only coffee she drank for her entire life. When she was in her mid-fifties, I served her some of the finest coffee I could conjure. She grimaced, swallowed hard, and smiled. "It's very nice, sweetie." She hated it.
If coffee became unavailable commercially, then I might consider the time, effort and attention required to grow and manufacture an alternative for myself. Otherwise, growing tobacco and food pretty much monopolize my available labor and focus.
Arabica beans may become rare, given the current disease issues with it worldwide. So all of us may be drinking coffee made mostly from robusta beans in the near future anyway.
Bob