Is there war weariness in GC3, as in most others strategy games? I remember good old Civ4 had it, so you are forced after some time to make peace if war drags for too long. Paradox games all have that.
Because so far, I only encountered 2 cases. You are losing, and the AI will ask for 20 techs to make peace. Or you are winning, and so why make peace when I'm gobbling their worlds one by one (because colonial capitals don't have a default garrison of 1-2) ?