Clearly calling adherence to DnD rules as adult and mature isn't a hyperbolic adjective. You don't plan for missing an Eldritch Bolt, you just press it again next turn. If your character eats a Bilette slam and dies, there is no strategy about the fact your next character hits Healing Word if ulette won't be dead by the end of the party's turn. You pretending like reacting to random misses makes for a rich environment in high level thinking is nothing more than self deception. There will always be an optimal route to ending combat, and all a miss causes is the stalling out of said combat, not what actions are used afterwards.
In fact, it limits the combat because nobody will bother to use witch bolt at a 65% hit chance when you can use force missiles and not waste your time.
I'll admit, RNG on basic attacks probably doesn't change how any combat is played. As you say, "you just press [attack] again next turn."
However, RNG on more impactful abilities like Hold Person, Blindness, Confusion, Entangle can absolutely change how a combat plays out. Related, the chance that I'll get hit and lose concentration also significantly impacts a combat. If I'm caster currently concentrating on a powerful spell and facing a bunch of small enemies, I might be willing to wade into melee range and trust my Shield spell to keep me unhit. However, if I know that the enemies have high to-hit bonuses or have spells that deal damage even on a successful save, you bet I'm going to play more cautious to try to keep my concentration. RNG is incredibly important for spells and powerful abilities as failing a single saving throw can have drastic consequences.
