Nicotine will probably make the difference, but it isn't the only thing. As much as it pains me to say this, Blu isn't one of the most highly regarded products here. If you really want a feel that's closer to a cigarette you'll need nicotine, a
juice with a PG/VG mix and a more powerful battery. You aren't going to get the throat hit or vapor that it seems you're looking for with a Blu.
If you smoke less than a pack per day, I would suggest looking into either a regular 510 or a KR808D-1. If you smoke a pack per day or more, then you might want to check out either a Riva or an eGo type starter kit.