I don't think it's realistic to say you'll never need credit again. Mortgages, car finance etc are all credit and I know that, unless I win the lottery, I'll need car finance.
I have a Vanquis card (paid in full every month), mobile phone contract and bank account all helping towards improving my credit rating.
Only when the last tree has died, the last river has been poisoned and the last fish has been caught will we realise that we cannot eat money.
Last IPA payment made on 28th June 2010 and I'm now looking forward to getting married in September 2012 - I'm proof that you can go BR and come out the other side.