First, I don't think it's accurate to call Bitcoin a "bearer asset". I would define that as something like a bearer bond or a gold depository receipt. Something that actually entitles the bearer to something else. Bitcoin is what it is, with no specific guarantee of convertibility to anything else.
I do believe that something else can be a "digital bearer asset" and that could definitely have value. There seems to be some interesting discussion of "digital bearer assets" for things like network services.
As far as Bitcoin's value in executing financial transactions, I think that is overshadowed by a few items
1) Its feature set which seems almost purpose built for criminal enterprise with little thought given to the needs of a typical honest person.
2) Extreme volatility, which makes it unattractive for those who would use it for something besides a vehicle for speculation
3) Inherent privacy issues
4) Network control issues. I don't want my money at the mercy of whomever can get control of 51% of the distributed network. I'd rather have a trustworthy board of directors explicitly approving who gets to play an important role, with advance notice before any changes are implmented.
5) Wastefulness. I'm not a big believer in AGW, but that doesn't mean I want to see energy resources wasted computing useless math problems to satisfy whatever popular delusion is in vogue.
Imagine a digital bearer asset with convertibilty to shares in an SPY index fund. Imagine that it would optionally allow you to designate a trusted third party to mediate transactions. Imagine it is controlled by a board of directors who have distinguished themselves as trustworthy, and managed in accordance with a public set of by-laws. Imagine those people enforcing security, data retention and privacy standards on all processing of transactions.
As someone not looking for a get rich quick scheme, I would find that scenario much more interesting and useful. I think it's only a matter of time until someone comes along with a better idea.