It's not that easy of a shot, especially if you grew up not taking it, Wade doesn't really take them much. You just gotta take them, Bron from jump was firing up threes even though he wasn't really that good at it for several years of his career, he would still fire them shyts up regardless and sometimes he'd get hot. Demar shot it so-so last year and actually took 3 a game, this year he just reverted back to not shooting them and when he did it was a travesty
The 3 ball taking over just made sense because of how teams started to use zone principles to stifle offense.