The problem is you can’t find any company willing to recycle them. Because of the nicotine content, I’ve heard e-waste recyclers consider them hazardous waste and refuse to touch them.
Here's a slightly old investigation finding 40% of ewaste being shipped off to china: https://www.ban.org/news-new/2016/9/15/secret-tracking-proje...
you can choose to either vape a flavour version only, or one containing a certain amount of nicotine