They all taste more or less the same to me. Maybe there are minor differences but if I’m not intentionally trying one cup right after a different one, I’m not going to notice. It all tastes like “coffee” to me. (I drink it hot and black. I can’t stand the taste of any coffee if it’s just warm.)
But yeah I do agree if you're getting arabica beans from standard places that may or may not care about how they're roasted, keeping them fresh, etc. it all does start to blend together in taste.
But I’d be worse off overall in that world, because then I’d go from enjoying cheap coffee, to hating cheap coffee and only enjoying “good” (read: expensive and/or time consuming) coffee. Folks would say “try this coffee, you’ll never go back to Folgers”, and you know what? They may be right! But why would I be better off? I’m already happy. I already enjoy my coffee.
Always trying to pursue finer and finer things leads you to a hedonic treadmill that’s hard to escape. It’s a trite and cliche Sheryl Crow lyric, but it’s absolutely true: It’s not getting what you want, it’s wanting what you got.
My friend made pour over coffee once, I don’t remember it tasting any different at all.
I can tell if someone made it “strong” or not, mostly because if it’s really strong I feel jittery and over-caffeinated after. It does taste “stronger” too, but not so much different as just less watery vs more watery.
If you're interested, I'm 100% positive you'd be surprised at how many different flavors are available in coffee. I'd second the recommendation of qbasic_forever above. It can make a fun date with the wife, or if you have a locally available coffee subscription that can be a fun way to see some variety at home. Funky fermented flavors, maybe juicy acidity - I promise there are coffees that would be unrecognizable as coffee.
All that said, you might not like any of them. If what you're drawn to is the roasty flavors and bitterness then you'll lose some of that in exchange. All that to say, I'm 100% certain you'd be surprised by the variety of flavors if you were to pursue it, but there's no reason to if you're happy with what you've got. It only gets more expensive and less accessible...
