I wanted to do DIY once I realized I loved vaping and once I was able to quit smoking.. I actually came to this forum lurking and read all about it..
But the nicotine aspect scared my husband, and he in turned tried to tell me I would die if I messed with nicotine (which effectively scared me) and then he forbade me from doing it, said we would just buy it because he didn't want me to get killed..
but I think I would love doing DIY.. and I think I am going to get into doing at least some no nicotine stuff..
In my opinion, Nicotine is no more dangerous (and less caustic) than drain cleaner. Use the same rules, don't get it in your eyes, wipe up spills and drips immediately. I use 100mg nic and it doesn't burn when you get some on you, just wash the hands. It IS a poison. "Caution". DIY is my shineyitis of sorts, I LOVE doing it.

