Hi Internetstuff!
I had the same hesitations and fears about WILD when I read about it. Although, as you have said, people say that it is natural and harmless, it’s a bit difficult to believe when you have read about (and/or experienced) the HI/HH horror stories!
This is what prevented me from trying the WILD techniques, I was terrified of what I might see/hear/feel if I was actually able to succeed with them.
Recently though, I read about a technique called “Chaining” here on ld4all and I was fascinated with people being able to link dreams together and go into them lucid. (Here is a link to the thread https://community.ld4all.com/t/chaining-deild-guide-and-faq/31172)
A few nights ago (completely by accident), I had just become lucid when the dream started to fade and I started to slowly wake up. However I managed to stay somewhere in between the dream state and the waking state, trying to keep myself still - this led to a sort of WILD experience, but I was completely calm and amazed at how strange it was to feel the tingling/humming vibrations and to see a dream scene appearing before my eyes (without all the scary stuff!).
To cut a long story short, I accidentally woke myself up by having to swallow but this taste of what a WILD could be like left me inspired and motivated.
My advice to you would be to try ‘chaining’ (I think they are also referred to as Dream Exit Induced Lucid Dreams) and forget about the label of WILD; that might also be a part of your fear. Once you are able to associate the vibrations and other ‘pre WILD’ phenomenon with a positive experience you won’t be hesitant anymore and will be much more successful 
Good luck!! 