My favorite food is raw onion. Have you ever tried it?
I like cooked onion a lot. I also like it's close relatives garlic, shallot, leaks and chives.
Yes, they are very similar. Do you know what gives them that strong characteristic "onion taste"? 
I'm not sure and no one really knows where its wild original form came from. 
Interesting. Do you know if onions will grow in the wild? Or were just developed by farmers? 
They grow wild as well. Most frequently it's a perennial but most farmers treat it as an annual. They usually harvest in it's first growing season
Interesting, I had no idea. I like to add the onions on my sandwiches. Do you know what health benefits we get from eating onions?
I know more about growing onion than the nutritional value, although I probably should check on that. The onion plants leaves are a bluish green and what we eat is the bulb at the base.