Personally I prefer BTC because it doesn't send your house address and what not via payments, but sometimes it gets annoying when I want to buy something online but they don't accept BTC. What do you prefer: PayPal or BTC?
i use both and i like both, for example with paypal you can pay in amazon, ebay, and other sites, while with bitcoin you can't pay here, but you can pay in openbazaar site
and bitcoin have much smaller fees than paypal do, and also when you pay with bitcoins you need to give much less info than paying in paypal, but i think that both are very good