The problem is, I wish I wasn't, although no Labour voter, they are the only party to offer a credible opposition, with this bloke in charge they have no chance of getting anywhere near the Tories, and strong opposition means better governance all round. The folk you speak of are the ones holding Labour back, they have forever screamed about not being 'Tory Lite' whilst again ignoring the painful truth that that is exactly what they have to be; this country IMO is ever so slightly centre-right, but acknowledges and accepts the centre- left if the others start to go too far. With an intransigent hard left throwback like Corbyn as leader, although it gives great joy to many on the left, it does not result in power, which is the ultimate aim.