I don't think it should be voluntary, it should be compulsory.
Some pensioners do not need their WFA, TV license and bus pass, so they shouldn't receive them IMO. I am getting sick of hearing that they have paid in, so they are entitled to it! They haven't just paid in for their pensions, and it wasn't a savings account that they paid into.
Why should families who are having their tax credits cut, CB cut, housing benefit cut, DLA cut, be told they have to work longer, keep having their pay frozen, have to pay for these benefits? Look at all the people visiting food banks, it ain't pensioners!