Lune, you are oversimplifying matters. It isn't that obvious. Berating the people who wanted a clear explanation is juvenile bandwagoning.
There are many items that benefit different characters differently. A paladin gets a different benefit from a Headband of Charisma than a sorcerer. If Gauntlets +1 don't help your character, sell them or give them to a party member that does benefit from them like you do with every piece of loot you've ever acquired in your adventuring career(s). That argument is not convincing.
Saying that the signifigant gap in the price of items that effectively grant the same benefit changes the dynamic of the game is more convincing.
Also, you have an overinflated sense of how fragile the Pathfinder game is.
It is robust.
It can handle odd numbered enhancement bonuses without "breaking".
I know this because it can handle characters with all 16s, 17s and 18s for stats and max hit points. It can handle min-maxers and role-purists. It can handle parties of 8. I've experienced these firsthand as both a player and as a DM.
Ashiel makes several good arguments for why odd numbered enhancement bonuses would be a good idea. Many others (SKR included) provided great reasons why they aren't a good idea especially in the context of large scale play.
People don't get to be "rules gurus" without rigorously questioning the rules. So don't berate people for their close examination of the rules. The only tabletop RPG I play is Pathfinder. I don't need to be berated for wanting to understand how it was made.