It is easy for anyone to explain about bitcoin. Think about your start when and why you started to adopt bit[Suspicious link removed]n the same manner and tell him the same things which you find in bitcoin and you will find him getting interest in bitcoin.
You and me started bitcoin, because we have interested on crypto currencies to know about them, and also we have awareness about online work. But i saw majority who have no interested in bitcoin, because they don't know very well about online system, that's why they avoid it and few people are there who have no trust on bitcoin, because they think it never work in future.