Do you think that nicotine is really the most addictive substance?

I haven’t tried a lot a drugs, I did weed, mush, snorted methylphenidate and guanfacine, loperamide, dph ( never doing that bs again) and nicotine. And i keep thinking that no way a vape is more addictive then heroin and crystal meth. What do you think? I wanna know from people who are doing more hardcore drugs what like heroin what does the withdrawals feels like compared to nicotine.

(Sorry for errors English is not my first language and I’m dyslexic)