Bitcoin seems like the perfect match for porn and gambling so kinda inevitable. It's just a matter of when. You have to remember that most people learned about Bitcoin in april, that is barely 6 months ago. These things take time.

I'd be surprised if 2 years from now, most porn and gambling websites still don't accept Bitcoin.

The good thing is we can still buy bitcoins at cheap prices. For early adopters, the ideal scenario is one in which Bitcoin appreciates steadily so you can easily buy Bitcoin every month rather than huge bubble/bust every now and then. So let's not be too eager to see mass adoptions. That's time to make more fiat to buy more bitcoins.