Re: What is this?
Young people lack the experience to vote smartly. Old people have that experience.
Young people have better education, but does that mean they're smarter?
Old people do run the risks of dementia, but people diagnosed with such issues can be removed from the electoral roll.
The age of retirement is increasing meaning that people work longer, and there have been suggestings that people should work until 70, even later, and indeed there are some who continue working well past their 70th birthday. Perhaps you could argue that when you retire you lose the vote: That might seem reasonable save when people retire, they're at the mercy of those who can vote. Hate to be retired when someone decides to abandon the national pension payments and stop all payments - the young would probably agree as they've not paid in, but those who have...
So the argument is not so staight forwards. Perhaps adapting the old system of property owners being able to vote, but change it to tax paying workers... only that would exclude people who should have the vote (someone taking a career break to raise a family, for example).
Nope - not as simple as stating 'over 70's shouldn't vote'.
Naselus: You talk of old people voting 'stupid', but you do not qualify that with what you consider 'old', nor how you define their voting as 'stupid'. I do hope you didn't use the claims from the Brexit vote* as the claims that older people voted leave and younger voted stay is very misleading as it was at best a staw poll of a small number of people, most just around London, with a few stretching to a couple of other cities - there was no exit poll from which to draw meaningful statistics on the voting pattern.
As for the old being asset rich... are you surprised? They've been working for 50+ years and built said assets. Of cause they'll be asset rich. The state then seeks to strip those assets from them to pay for what those old people have already paid for while they were working (retirement, elderly care etc). The youth are lucky if they inherrit anything as a result, but they then get to build up their own assets. Or that's the theory.
*this is the only time I've heard claims that old people voted 'stupidly'. Mostly they're accused of voting as they've always voted, but by then they've learned that polticians lie, and if they bother to vote, they'll go with what they know, not what they're being told. Voting with self interest is the norm, and is not age dependent so that's a non-argument. Especially when you understand the importance of the women's vote over the years and how political parties courted that vote.