Becoming familiar with guitar tab notation is an important step in becoming a guitarist. If you just want to learn and strum a couple of chords, than you won't need to know how to decipher tablature. BUT if you want to be able to play as many songs as you like, you will definitely need to learn how to read guitar tabs.
First of all, you need to know that reading tabs is very easy. It may seem complicated at first, but with just a little practice, you'll be able to effectively read guitar tablature, which is great, since you can download loads of tabs off of the Internet, not to mention the fact that our own Guitar Pro tabs database uses tabs as well.