It's still really, really hard to obtain bitcoins. And until that changes, what good does it do to be able to spend them?
I can't say I'd noticed. Admittedly it's not trivial, in that I don't know of anywhere you can just show up with a credit card and buy a bitcoin, but it's hardly rocket surgery to fund a MtGox account.
I started that process purely for the fun of some small-time speculation, but the whole hassle of the process made me realize why Bitcoin is important.