That depends.
Do you want to make games?
Are you willing to invest a large chunk of your life into game programming? No programming language is easy to use, DBP takes a few years of intense struggling with before you master it.
Are you a person who wants to get to the bottom of things? Someone who wants to know what code is hidden behind button clicks and bullet collisions?
If you answered "yes" to all of those then sure, go ahead and download it.
If you are a person who just wants to make games quickly and have fun with more of the artistic aspects of games, I suggest you either check out UDK or Unity 3D, or maybe even something as simple as FPS-Creator (on this website).
TheComet
"Why geeks like computers: unzip, strip, touch, finger, grep, mount, fsck, more, yes, fsck, fsck, fsck, umount, sleep." - Unknown