I didn't go to e-cigs to quit...I went to them, because I liked smoking. I still am smoking my e-cig.
Background: I started smoking Marlboros when I was 12 or 13. Kids could buy cigs back then if they said they were buying them for their parents. I smoked pretty steadily until I was 25 or 26 because my then-wife was allergic. I used the Nicorette CQ patch to quit, and it worked, and I didn't cheat. I stayed quit until...2009 or 2010.
Then hookah bars started springing up and becoming popular. I enjoyed the occasional hookah--the tobaccos came in great flavors, and the smoke was much more mellow. I ended up buying one for the house, and ended up smoking it all the time. So, I decided to give e-cigs a try. They had the same features I liked in hookah: Lots of different flavors to try, and a mellow smoke, but without leaving you smelling and tasting like an ashtray. Been smoking the e-cig ever since.