What will be the next big social issue?

[DC Al Fine]

Let's see here:

Abortion, Gun Control are incumbents on the scene, so I wouldn't count them as next issues even if they flare up in the next 5-10 years.

Marijuana will gradually win out politically. I don't seeing it being a massive, divides the country issue. Ditto for the remainder gay rights.

While I do think polygamy will eventually become a contentious issue, it's not supported enough now to become the next big thing. Even if polygamy enjoys SSM's meteoric rise, it would still be decades away from being a major issue.

With all that in mind, I'd guess euthanasia will be the next big social issue.