Welcome to EH-Net. I appreciate your enthusiasm, but I think one post will get you answers you need. So I deleted one.
You ask a good but tough question. Career choices are always tough, and it's even tougher helping someone you don't know. That being said, let me see if I can help.
Both sides use tools that the bad guys use, so for each one you get a little taste of the dark side without crossing over. The main difference is that forensics deals specifically with security as it relates to obtaining data that is legally actionable. So if you are extremely meticulous and have an interest in law enforcement, forensics may be for you.
In another post somewhere in this forum, I warn people going into forensics about the type of content you may be asked to obtain and thus see. Not always but often people who act illegally do some things that may turn your stomach.
One other cool thing about forensics, is that you can charge a premium for the simple fact that it is associated with the legal profession, and there are very few truly qualified specialists. That to me screams "OPPORTUNITY!"
Hope this gets the conversation rolling,
CISSP, MCSE, CSTA, Security+ SME