Plenty of people disagree and there is plenty of spam here on other topics.
That's a mighty weak justification for spamming the board with the same message for months on end.
Harranguing your fellow Freepers about the DACA issue isn't going to change a thing, but it will cause most of them to tune you out.
You could communicate your message to the President once a day, for a tenth of the effort you expend here. You might even make a real difference.