People avoid bitcoin as simple as because they don't know it very well. Or maybe misunderstood, or don't like the idea of bitcoin as a cryptocurrency. Also, maybe they alredy loss trades on bitcoin, leaving them to decide to stay away from bitcoin.
I think it's not just because of that, there are still many other reasons including because there are some people who take advantage of "bitcoin" with the lure of investments such as HYIP and MLM
in my country people avoid it because it is because there is a group of people who use the name bitcoin to deceive people