1)Decentralized peer to peer currency
2)Blockchain and public ledger
3)Anonymous transactions
4)Bitcoin mining, hashing, and difficulty
5)Hardware and Software wallets
6)Zero to very low fees for transactions, and no chargebacks
You forgot scammers increase 100%.
There's scammers everywhere, not just Bitcoin. As long as the Internet's been around, there's been skeevy people trying to exploit innocent people. Ebay's had scammers for years.
As long as there's money and gullible people involved, Bitcoin and the Internet provide a forum for scamming. Bitcoin certainly didn't invent or introduce it.