What are the benefits of saving data to a table and how can it be done?

I've seen many pages of people asking how to save datastores to a table and people have also recommended me to do it but i don't understand what are the benefits of doing so. I wanted to give it a try so this is what i've attempted to do but i'm not sure if i'm doing it right.

--//Service
local dataService = game:GetService('DataStoreService')

--//DataStores
local dataStores = {
	goldData = dataService:GetDataStore('GoldData'),
	silverData = dataService:GetDataStore('SilverData')
}

--//Save Function
function saveData(dataName, playerId, value)
	dataName:SetAsync(playerId, value)
end

--//PlayerAdded
game.Players.PlayerAdded:Connect(function(players)
	
	local ID = players.UserId
	
	local folder = Instance.new('Folder')
	folder.Name = 'leaderstats'
	folder.Parent = players
	
	local gold = Instance.new('IntValue')
	gold.Name = 'Gold'
	gold.Parent = folder
	
	local silver = Instance.new('IntValue')
	silver.Name = 'Silver'
	silver.Parent = folder
	
	local loadGoldData = nil
	local loadSilverData = nil
	
	pcall(function()
		loadGoldData = dataStores.goldData:GetAsync(ID)
		loadSilverData = dataStores.silverData:GetAsync(ID)
	end)
	
	--//If player has data then load it
	if loadGoldData and loadSilverData ~= nil then
		gold.Value = loadGoldData
		silver.Value = loadSilverData
		print('Data Loaded')
	else
	--//Else player is new 
		gold.Value = 10
		silver.Value = 100
		print('New Player')
	end
end)

--//PlayerRemoving
game.Players.PlayerRemoving:Connect(function(players)
	local ID = players.UserId
	
	saveData(dataStores.goldData, ID, players:WaitForChild('leaderstats'):WaitForChild('Gold').Value)

	saveData(dataStores.silverData, ID ,players:WaitForChild('leaderstats'):WaitForChild('Silver').Value)
end)

--//BindToClose
game:BindToClose(function()
	for i,v in pairs(game.Players:GetPlayers()) do
		if v then
			v:Kick('The Server Has Shut Down')
		end
	end
	wait(3)
end)