should i try and fix this swingarm?

I was negligent with taking care of the chain and now my swingarm has been sawed almost all the way through by the chain. Is it worth trying to fill this with weld and replace the needle bearings or should i just pick up a used swingarm? the needle bearings definitely have a hard time spinning around but the chain didn't wear all the way through.

If it has worn all the way through the bearings, I would not feel comfortable repairing it.

You can find used ones in very good condition on eBay.