When a fighter charges an oger with his two handed sword manages to hit with a 17 and then chop off his head with 3d6 for 18 pts damage, thats luck (he earned it).
As for the elf....did you see that Metron picture?
When a player rolls an 18 strength that is pure luck, that is earned (how many PCs has this chump rolled up before getting an 18)? Is it earned In the same way, of course not...its not the PC its the player, but still the player did it. Its going to urk him to see the guy across the table with shit roles, say a 9 strength, get a +1 by giving up a few slots (big deal). Watch out, its Barney Fife with his one bullet...

Or the guy that roles a 17 but sticks it on his dex and puts his lowest role on str. knowing it doesn't matter, he still gets his +1 (cough cough power gamer...cough).
What really rubbed me the wrong way with Weapons Specialization is that its introduced a new
rule dynamic where PCs substitute game play (just being a bad ass despite bad attributes) with "building" (fine tuning your PC in a meaningful way rather then in your imagination and depending on good luck and smart play). What WS does (even a simple +1) is remove variability from the game. Gygax could have chosen not to include attributes (saying all PCs are basically the same). But wisely he did not.
Attributes are a way of creating "forced variability" within each archetype (including the fighter class). The reality of bad roles vs. good roles was and is apparent in every group (ex. in a group of 8 with 3 fighters, likely one is going to be getting a + to hit and damage and be a bit of a hog. But thats OK next go round that guy will probably role average str. and one of the other guys will role a high str.
The reality of subpar strength for instance, strongly encourages the player who always wants to be muscle bound Conan (the bad ass fighter cutting everyone down before him) to play something more akin to Subotai (with say an average str. but a high dex). This makes one PC different then the other. It creates depth, forces the guy who's the whimp to come up with new ideas he might otherwise not have. Attributes (espl strength) create a means to picture your PC differently and to create different stories. It removes homogenization between similar PCs (so you can remember one fighter from the next, rather then "oh yeah that was Joe with the +1 WS longsword and the other was fred with the +1 WS long sword" etc.)
It also tended to force the guy who did role a 17 or 18 strength to take a WS of +1 just to stay one up on the dweeb who takes WS with his 9 str. even if he doesn't want to do it (otherwise he's just on par with every fighter who did take it). What ended up happening was every fighter took WS every game (no one wanted to be "stumpy left behind"). No one missed having 4 weapons, since they all chose Long Sword anyway (the most common sort of magical sword found) And so the dreaded rule was canned after about a year.
The concept of WS was also a potential pandoras box - why not allow other players who role badly in attributes , trade one thing to get a +1 to hit with a bow, or go a little farther in combat (the equiv. of a 16 or 15 dex or con?. Afterall the guy with a 9 str. suddenly is given the equiv. of a 16 str.). Just make the trade off steep, right???
What makes fighters special? Why not allow an MU spell specialization (I'll give up 2 spells to double the range and damage of the one I "specialize in" ( Spell Spec.),
"hey you let Bill do it with his fighter, why not me, I only get to memorize one spell at first?" And he'd make a good point). etc. etc. Tony the thief with his 12 Dex sees Stuart with his 18 dex thief about to be kicking some ass as a thief, and before the game starts declares "NO FARE". "DM I will gladly give up X if you give me a +10% HIS as my sneak specialization. I am a master sneak and don't care about PP or FRT...let me have the +10% I want to backstab. Where would it end? Pretty soon your dealing with a new game and a bunch of pussies.
Bottom line, WS does change the game (even a minor +1) into a new game.
Its a fact.
PS WS does exist with NPCs and monsters (Joshux the 0 level guard gets a +2 with his spear, Murry the halfling a +3 with his bow). Leave it there.