There are multiple problems.

The title of the post is asking when people think they should take their decorations down. The actual question is when they took them down. Those are not always the same thing.

The question is also ambiguous. The holiday season does not have the same end date for everyone. For some people it's after Christmas. Others it's after new years. If your Catholic it's through Epiphany or the Sunday after Epiphany.

It's a poorly asked question with an incorrect title.