gortex2,
I am a newly licensed ham as well as a newly licensed GMRS operator.
Personally, I did so for 2 reasons. The first is, I am extremely nervous about pressing that PPT button. (Kind of shy) I believe the GMRS community is less stringent or more understanding of new operators who may make mistakes, which makes pressing that PTT button easier on GMRS. The second reason is, my wife has no desire to get a ham license. I wanted to be able to help educate her on the use of radios if things turned south and we needed another way to communicate. So, I helped her get her own GMRS license. We practice communicating often, between our vehicles as well using our base to our vehicles. She has requested permission from local repeater owners, and when she receives those permissions, we will start to practice using the repeaters as well. Introducing the grandkids will be next.
I hope this makes since and helps.