Another unfounded assumption. This is as dependent on the player as it is on the GM, system, and setting.Most people don't carry around guns 24/7! That's because they have regular lives, your character doesn't so it should have no problem with that.
This one I'll give you. Most systems don't make a significant distinction between becoming proficient with guns and becoming proficient with any other kind of weapon, as I understand it.Most people aren't proficient with guns! Yeah, but RPG systems don't care if you spend XP on Firearms proficiency or bare fist fighting, it costs the same.
Right again, though whether knives and fists are as effective as guns in storming a well defended building is, once again, system dependent.But it's easier to get knife into secured place! No. And if you plan to take on heavily-secured place bare fist...
Because cost and weight capacity are never things you need to worry about in an RPG. You never need to conceal you weapons either right?Guns jam, run out of ammo etc. ! That's why you carry more than one gun and extra ammo.
This is generally true, but there are specific systems and circumstances. Supers and stealth-kills anyone?But if guy with a knife is next to you you are screwed! Not in any RPG I played.
This may not add to their lethality at all, but it's certainly not something to be completely disregarded.But knifes, axes,... have extra utility! So carry them around for utility, not for combat.
For the weapon alone, sure. But many systems have the weapon's base damage as only one of a number of factors in a damage calculation. In these systems the best weapon is the one you built your character around, be it a melee weapon, an archaic ranged weapon, or a modern firearm.Also guns can out damage melee and unarmed fighting (with the same investment) in any (modern) RPG I played. And have range advantage.
The simple fact of the matter is this: all other things being equal and close to reality; yes, guns are the go-to weapon for taking down other equally well-armed foes. The rarity of all things being equal is astounding in all but a select subset of gaming situations though; nevermind it almost never being the case in reality.