One reason that procrastination is so appealing is that it's designed to be simple and easy to digest.
Mediums like Reddit and Youtube are designed to make it easy, painless, and fun to navigate around them. The learning curve and difficulty of using computers and web applications has come down tremendously, and it's easy and pleasurable to consume on an iPad, Kindle, or through Netflix.
When you tune into one of these channels, confusion melts away. You're given an easy to use interface that plugs you right into fantastic entertainment, relaxation, or semi-productive activities. These can be quite seductive.
Or, even if you're committed to a solid workday, how easy is it to get caught into low-quality time just processing admin and email? That's important to handle, to be sure, but is it really moving your life tremendously forward?
Compare the simple forms of entertainment and low-quality busywork with actually tackling hard problems. With quite hard problems, you might spend 80% to 90% of your time confused and not able to take great action, just trying to think on how you'll tackle the challenge and make progress.