It seems that bitcoins are trusted in. they're here to stay and people understand that. so yeah, in the long term prices will go up.
So there is not reason to spend BTC by this logic, thats why I call it bubble. Many believe they will get rich this way, but in real world this happens very rarely.
There are at least two problems with Bitcoin:
- max 10 transaction / second = cannot compete with current payment methods
- easy to do laundering / support terrorist = probably will be banned in future by goverments