I never thought of an acoustic bass as a good idea until I saw Nathan East playing one with Clapton - then it was LOVE and I hadda get one.
Really though - the acoustic is very versatile and fits into many more grooves than you will know until you try one.
Maybe the only thing it won't sound good at is slapping - but I've never tried it as I don't slap any of my instruments.
As far as an antidote for gas goes, it fills a lot of that urge to buy more basses just looking for 'that sound/tone' as it vastly improves your footprint in bass sounds and even playing technique.
It can go from super chocolate to the gut string hum of a stand-up double. Very smooth and super sustain too!
PS ::: You don't need to spend much more than three yards for a decent new one either.