I had some serious gas... but then I found the basses that met all my needs and the amp that met all my needs so the GAS went away. Now I really don't have any, unless there is a sweet trade out there
Seriously, if you enjoy it and have the extra cash, why not treat yourself to something great. Just remember expensive does not necessarily equal quality and a great bass may inspire you, but won't really make you anything more than you are now.
as the saying goes.... If you aren't enough without it, you'll never be enough with it.