I may be mistaken, but making it a constitutional amendment also makes it much, much harder for the legislature to alter it. If there’s a thing called a “constitution,” especially in the US, it’s generally both different and superior to mere legislation. The point of constitutions is to ensure status quo bias; there’s something undesirable about changing fundamental parts of your government when public opinion shifts by a few percentage points, as is likely to be the case with an amendment to repeal prop 8 in the next few years.
I may be mistaken, but making it a constitutional amendment also makes it much, much harder for the legislature to alter it. If there’s a thing called a “constitution,” especially in the US, it’s generally both different and superior to mere legislation. The point of constitutions is to ensure status quo bias; there’s something undesirable about changing fundamental parts of your government when public opinion shifts by a few percentage points, as is likely to be the case with an amendment to repeal prop 8 in the next few years.