The most important reason to get your CCENT Certification is to get your foot in the door. If you have a Cisco Certification you will stand out from the crowd when applying for a job. And in this job market, it is definitely worth having.
Maybe you already of a job, but getting certified my earn you a pay raise. That was the case when I got my CCNA!
Another good reason to get your CCENT Certification is so that you can learn how to properly set up and manage a local area network. You may already know a lot about networking, but by following the principles taught in this course you can learn the correct way to build a network that will be much more robust and can save you a lot of headache in the future.