Because, let's be real, you're already gonna do it anyway.
Why not just do it now and get it over with? The thrill of the task will wear off, but the satisfaction of having done nothing will only grow.
Remember, the key to justifying procrastination is to find the perfect balance between doing nothing and doing just a little bit of nothing.
Disclaimer: Justifying Procrastination is not responsible for any lost productivity, missed deadlines, or increased caffeine consumption.