Holy Fallacy of the Excluded Middle, Batman!
This is similar to how most eligible voters don't give a shit about electing the president. If Obama could run indefinitely, assuming he managed to not screw up really badly, it'd be a piece of cake for him to get re-elected in perpetuity a-la Putin, simply because it's much easier for the incumbent to win (even goddamn Dubya won!), and he'd be able to adjust the laws to his liking with the support of his party in Congress when they have the majority.