I think everyone struggles with this. I used to smoke one of my friends analogs sometimes and put it out and feel guilty. Now I just resist and stay strong - you can do it !
My father was a type 2 diabetic and vaping helped to keep his levels down. All those chemicals in tobacco really make any condition worse in my opinion.
There are many good ones out there. I personally have a eSTICK which I'm very pleased with. You can ask around and get opinions of people who are vaping. There's more and more models coming out all the time.