why use mono line when those braided line are stronger? Answr: Some days fish are picky and if they see your line, you will have no chance of catching them. Especially the larger, smarter bass.
why use a 200hp+ boat when you can catch fish in a 40hp boat? Answr: You want to get from point A to point B fast when fishing in a tournament.
why have so many poles when you can only use one at a time? Answr: In tournament fishing, each rod has its own application. You need a bigger, heavier rod with heavier line to haul fish out of the grass. Crank baits requires a mod-fast rod so you don't rip the hooks out of its mouth. Jig & Pig rods need to be very sensitive so you can feel each bite.....and so on.
why have all those expensive electronics when it's still up to the fish if they wanna bite? Answr: You need to find structure, bait fish, need to mark way points and tracks to show where you've been, where you're going next.
If you don't fish tournaments and don't care for it. Then one rod, a 25hp jon boat or shore and no electronics will be adequate.