The Ukrainians don't just tip the weapons in the bin you know, they use it to destroy Russian equipment. Whether the rest of Europe actually fires the the weapons itself or if we let Ukrainians do it does not matter for the end result: Russia will not have enough equipment left to push further into Europe.

Also it's not like Europe sent so much there is nothing left. It's mostly stockpiles of older kit that was in reserve.

Those weapons were designed, built and bought to destroy Russian equipment, and they are being used to destroy Russian equipment. The more they kill in Ukraine, the less they have to kill in the rest of Europe.

It is not like they sent the weapons to the void, those are used to slowdown or stop the invasion, worst case it buys time before next country gets invaded.

Plus Putin is not that insane to attack EU, his plan was revealed by an idiot that it is to go in Moldova next, then probably the other neighbors that are not in NATO yet.