I welcome your honesty.
Its also one of the reasons, why i like family fathers and mothers so much- even though most of them vote conservative. There is something selfish, that wants to see that the selfishness last forever.
Thats why those future persons need a spokesman, a long term selfish bastard/algorithm, who is able to veto on short-term behavior that is ultimative self-destructive.
The problem here is, that with such a control mechanism, its easy to go idealistic and try to "patch" humanity up while your at it- ending up with something, somialhinn, socialism.
So the patching up process, known as government, needs a reality check to prevent a run-a-way - and balances, to prevent a lock-out of the living from base resources and short term solutions on the way to long term solutions. Some flaws might be unfixable, and only work arounds will prevent them from flaring up again and again.
For example i can not get this generation to worry about the earth of tomorrows temperature.
The obvious solution would be to have a Future-Gen-House-of-Parliament veto on all usage of coal and oil.
Leading to a total standstill.
Thus the future-gen, could be bargained with- give us oil for another generation, and we will trade you in Carbon-Emission-Taxes and the development of fusion.
I dont claim to have a answer here, but it would be nice if there was some modeling software on how to build a better government here- including a simulation on how to reign in corroding elements like financially well endowed industries and tax-strained voters.