No one is saying anyone should use ranged combat full time.
What we are asking for is an alternative to simply beating on every single mob in the game. Honestly as raids become more wars of attrition the game needs something between melee and casting for a damage dealing option that uses resources but doesn't consume them a the phenominal rates the melee and spell slinging can. Currently ranged combat doesn't fit that roll due to the slow rate of fire.
The rules governing ranged combat in pnp give some balance to ranged vs melee because a ranged combat user must have enough dex to hit the target as well as a decent str for dealing damage. As you increase your str you tend to loose out on the ability to have the high dex for taking on mobs accross AC values.