I don't think it's a good idea to eliminate any class of people for the electorate. But at the end of the day, the point is moot: if non-pensioners can get the

I don't think it's a good idea to eliminate any class of people for the electorate. But at the end of the day, the point is moot: if non-pensioners can get their shit together enough to enact such a policy, they can surely organize themselves to oppose any poor voting by the pensioners. The real problem you're facing is that young people: 1. Don't universally agree with you, and so support the policies you're blaming pensioners for, and, 2. Don't vote in large enough numbers to actually make their voices heard. If you can fix that, you don't need to worry about disenfranchising a vulnerable portion of the population, since you can easily outvote them anyway.